| Subject/Photo | Publication | Page |
| Radial roof stock cars | BB25 | 74-5 |
| Radio Contact sign, E-8 cab | Z 56 | 18+ |
| Radio contact sign on E-8 cab (Z Q&A 08-05, Z 56) | Z 56 | |
| Rail and lumber end doors | BB25 | 65 |
| Rail anti-brine protective coating application | Z 55 | 24-5+ |
| Rail cross section showing crack | BB39 | 36 |
| Rail detection theory article (1/31) | BB39 | 46 |
| Rail detector car – see Detector car | | |
| Rail protective coating spray unit #211581 Waterman, Il. (1936) | Z 55 | 24 |
| Rail-barge transfer loading trestle Joppa (1952) | BB35 | 225 |
| Rail Monument for Marking Track Ownership | DS10 | 96 |
| Railfan excursion (first) Berwyn (8/37) | BB14 | 17 |
| Railfan special loco #4960(O-1-A) Streator branch (1959) | BB36 | 49 |
| Railfan special loco #4960(O-1-A) Beardstown (1961) | BB36 | 49 |
| Railfan special loco #5632 (O-5-B) (4/59) | BB36 | 49 |
| Railfan Special poster loco #3003 (S-4) (9/57) | C 96 | 26 |
| Railfan Special poster loco #5632 (O-5-B) (9/63) | C 96 | 26 |
| Railfan Specials | C 96 | All |
| Railfan mixed train loco #919 (K-4) Campstool (7/56) | C 00 | 14 |
| Railfan train Burlington Shops (8/37) | BB26 | 52 |
| Rail-highway co-ordinated service advert | BM | 25 |
| Railroad crossing sign - “Look out for the cars” (4/42) | BB33 | 84 |
| Railroad Crossing sign | DS10 | 12 |
| Railroad Crossing/Danger sign Metropolis | BB35 | 181 |
| Railroad Day celebration West Chicago’s 100th Anniversary (8/49) | Z 55 | 17-19 |
| Railroad Week loco #6316 (M-4) Centralia (6/29) | BB35 | 123 |
| Railway Express Agency Zephyr advert (4/34) | BB43 | 19 |
| Railway Express Agency barrow (c1954) | BB23 | 97+ |
| Railway Express Agency building, Chicago (8/58) | C 98 | 18 |
| Railway Express Agency office Council Bluffs (8/41) | BB24 | 58 |
| Railway Express Agency truck, Red Oak (6/58) | RO | 16 |
| Railway Express Agency truck, Washington, Io. (12/58) | BB30 | 73 |
| Railway Express Agency trucks | BB23 | 79 |
| Railway Mail centennial postcard (1962) | BB45 | 75 |
| Railway Post Office - full article (see RPO) | BB 8 | 4 |
| Railway Progress Institute Golden Freight Car award 1966 | BB 7 | 20 |
| Ralph Budd in Zephyr #9900 cab (1934) | BB13 | 8 |
| Ralston, Ne. | C 95 | 2/26 |
| Randolph, Ne. depot (7/68) | BB27 | 28 |
| Ravenna Creamery Co., Ravenna, Ne. (1926) | BB28 | 20 |
| Ravenna, Ne. stock yards | BB25 | 19 |
| Raymond Bros. & Clark warehouse, Scottsbluff | BB12 | 4 |
| RBL insulated boxcar paint (Z Q&A 92-16, Z 27) | Z 27 | |
| Rear markers coach #4540 (PC-7) Lincoln (10/62) | BB36 | 45 |
| Red Cloud, Ne. 10 stall roundhouse (1889) | BB44 | 84 |
| Red Heads motor cars #61-3 T&BV/B-RI | BB19 | 32 |
| Red Oak | BB22 | 28 |
| Red Oak aerial view (9/51) | RO | 4-5 |
| Red Oak branchline bridge (4/40) | BB25 | 130 |
| Red Oak CTC board and operator | RO | 7 |
| Red Oak depot - full article | RO | 1 |
| Red Oak depot, tower & water tower (c1938) | BB39 | 29 |
| Red Oak depot and area (1963) | RO | 11/13 |
| Red Oak depot and surroundings (1947) | RO | 1 |
| Red Oak depot and yard (c1941) | BB36 | 7 |
| Red Oak depot floor plan | RO | 6 |
| Red Oak depot plans | RO | 13 |
| Red Oak depot postcard view (c1905) | RO | 7 |
| Red Oak last steam powered freight (10/57) | BB21 | 63+ |
| Red Oak original railroad facilities (c1902) | RO | 4 |
| Red Oak photographer Harry Draper | BB36 | 29 |
| Red Oak roundhouse (c1945) | BB22 | 49 |
| Red Oak tower and water tank | RO | 11 |
| Red Oak turntable (4/41) | BB22 | 53/55 |
| Red Oak water spout | RO | 11 |
| Red Oak yard (1949) | BB22 | 44 |
| Red Oak-Griswold timetable March 1949 | BB22 | 48 |
| Red Oak-Hamburg timetable March 1949 | BB22 | 48 |
| Red paint scheme BN MoW | BB36 | 55+ |
| Reefer #31 Fox River Co. "Clover Hill Special" | Z 57 | 8 |
| Reefer #117-9 BREX refrigeration test cars (1955-6) | BB12 | 25-6 |
| Reefer #120 BREX first mechanical reefer | BB12 | 25 |
| Reefer #201 CSNX ammonia system CP | BB12 | 19 |
| Reefer #300 BREX first steel express reefer (6/37) | BB16 | 36 |
| Reefer #300, 326 BREX express reefer | BB12 | 14 |
| Reefer #326 BREX with cream compartment | BB16 | 56 |
| Reefer #1600 NX Hunter Packing Co. billboard reefer | BB28 | 58 |
| Reefer #1615 NX Morrel Refrigerator Line billboard | BB28 | 50 |
| Reefer #1800, 1900 MNX National Car Co. BP's | BB12 | 22 |
| Reefer #1915 MNX first National Car Co. meat reefer | BB12 | 23 |
| Reefer #2115 MNX Pacific Car & Foundry | BB12 | 23 |
| Reefer #2149 MNX Pepper Packing Co. | BB12 | 42 |
| Reefer #2315 MNX first Havelock reefer | BB12 | 23 |
| Reefer #2335 MNX last Plattsmouth overhaul (1967) | BB12 | 44 |
| Reefer #2335 MNX National Car Co. (1967) | BB16 | 40 |
| Reefer #2343 MNX Pepper Packing Co. | BB12 | 42 |
| Reefer #2356 MNX updated paint scheme (3/68) | BB12 | 23 |
| Reefer #2389 MNX converted to mechanical reefer | BB12 | 28 |
| Reefer #2389 MNX National Car Co.(4/75) | BB16 | 46 |
| Reefer #2400, 2413 MNX Needham Packing Co. | BB12 | 42 |
| Reefer #2423 MNX National Car Co. | BB12 | 42 |
| Reefer #2430 NBCX Nebraska Beef billboard reefer | BB28 | 51 |
| Reefer #2522 RBCS C&S | BB12 | 32 |
| Reefer #2542 RBCS C&S | BB12 | 38 |
| Reefer #2578 RBCS C&S repainted Cascade green | BB12 | 38 |
| Reefer #2601 KOHX Kohrs Packing billboard reefer | BB28 | 52-3 |
| Reefer #2624 RBCS C&S Coors service CP | BB12 | 37 |
| Reefer #2650 OPCX Omaha Packing billboard reefer | BB28 | 53 |
| Reefer #2786 RBCS C&S painting error | BB12 | 38 |
| Reefer #2322 MNX Pepper Packing Co. | BB12 | 42 |
| Reefer #2819 RBCS C&S Landis plug doors | BB12 | 40 |
| Reefer #2860 LNPX Lincoln Packing billboard reefer | BB28 | 54 |
| Reefer #2914 RBCS C&S plastic roof & doors | BB12 | 41 |
| Reefer #2915 RBCS C&S Landis plug doors | BB12 | 40 |
| Reefer #3020 NX Krey Packing Co. drawings | BB28 | 57 |
| Reefer #3021 NX Needham Packing Co. and modelling | Z 54 | 23 |
| Reefer #3060 NX LaCrosse Breweries billboard reefer | BB28 | 16 |
| Reefer #3070 NX Monarch Brewing billboard reefer | BB28 | 14 |
| Reefer #3080 NX Heileman Brewing Co. billboard | BB28 | 15 |
| Reefer #3100 ROSX Ross & Co. billboard reefer | BB28 | 34 |
| Reefer #3297 FPCX Fremont Packing Co. (11/46) | BB16 | 36 |
| Reefer #3300 MACX Mahaffey Commission billboard | BB28 | 35 |
| Reefer #3500 HPEX Henderson Produce billboard | BB28 | 38 |
| Reefer #37653 (as #239414 ice service) | BB12 | 7 |
| Reefer #3619 NX (c1965) | BB28 | 54 |
| Reefer #3870 SPCX Superior Packing billboard reefer | BB28 | 55 |
| Reefer #3900 MBIX Merchants Biscuit billboard reefer | BB28 | 36 |
| Reefer #4000 PCX Packers Car Lines (Armour) | BB12 | 23 |
| Reefer #4006 OFPX Otoe Food Products billboard | BB28 | 21 |
| Reefer #4104 PKSX Producers Cold Storage | BB28 | 22-3 |
| Reefer #4201 CMX Carnation Milk billboard reefer | BB28 | 26 |
| Reefer #4300 KKCX Keokuk Canning billboard reefer | BB28 | 24 |
| Reefer #4400 GBX Goetz Brewing Co. billboard | BB28 | 6 |
| Reefer #4500 CMRX Chicago Macaroni billboard | BB28 | 27 |
| Reefer #4600 SNBX Schneider Brewing billboard | BB28 | 3-Dec |
| Reefer #4700 DPKX DiTolla Produce billboard reefer | BB28 | 28 |
| Reefer #4800 MKCX McIlhaney Creamery billboard | BB28 | 29 |
| Reefer #4900 BCCX Banner Creamery billboard | BB28 | 30 |
| Reefer #5000 BREX variations and equipment | BB12 | 27 |
| Reefer #5000 MCMX McMullan Brothers billboard | BB28 | 31 |
| Reefer #5020 BRMX reclassified RPM (11/65) | BB12 | 28 |
| Reefer #5039 BRMX (ex BREX) Siouxland Historical Railway Ass. (2005) | Z 51 | 4+ |
| Reefer #5061 BREX and ‘B’ end view | BB12 | 27 |
| Reefer #5062 BREX new paint scheme (3/61) | BB12 | 28 |
| Reefer #5100 BRMX first outside braced reefer | BB12 | 29 |
| Reefer #5100 TUX Tivoli-Union billboard reefer | BB28 | 7 |
| Reefer #5150 BRCX outside braced | BB12 | 29 |
| Reefer #5200 GCLX Glaser, Crandell billboard reefer | BB28 | 32 |
| Reefer #5246, 5298 BRMX fibreglass herald | BB12 | 30 |
| Reefer #5300 FBX Fontelle Brewing Co. billboard | BB28 | 5 |
| Reefer #5300, 5347 BRCX BP | BB12 | 30 |
| Reefer #5400 ADCX Adolph Coors Co. billboard | BB28 | 8 |
| Reefer #5400 ADCX Coors billboard G scale model | BB28 | 64 |
| Reefer #5400 ADCX Coors billboard reproduction | BB28 | 9 |
| Reefer #5426 ADCX Coors billboard company photo | BB28 | 9 |
| Reefer #5426 CRLX Old Dutch Cleanser billboard (1937) | BB28 | 47 |
| Reefer #6000 KPEX Colorado Poultry & Egg billboard | BB28 | 37 |
| Reefer #6100 RMPX Rocky Mountain Produce billboard | BB28 | 39 |
| Reefer #6200 BDTX Bourk-Donaldson-Taylor billboard | BB28 | 40 |
| Reefer #6500 FCIX Farmers Co-op Creameries billboard | BB28 | 41 |
| Reefer #6650 NX Hunter Packing Co. billboard reefer | BB28 | 59 |
| Reefer #6800 MCDX McDonough Refrigerator billboard | BB28 | 42 |
| Reefer #7200 PKSX Producers Cold Storage | BB28 | 22-3 |
| Reefer #7400 CKCX Central Creamery billboard reefer | BB28 | 43 |
| Reefer #78530 BREX Buda (1944) | BB41 | 85 |
| Reefer #7905 NX Los Angeles (1936) | BB28 | 33 |
| Reefer #8200 OPKX Onalaska Pickle billboard reefer | BB28 | 44 |
| Reefer #8600 AFTX Thibodeau Co. billboard reefer | BB28 | 45 |
| Reefer #11101 URTC billboard Ravenna, Ne. (1926) | BB28 | 20 |
| Reefer #14313 URTC Goetz Brewing billboard | BB28 | 6 |
| Reefer #14606 VCIX Van Camp billboard reefer (1938) | BB28 | 47 |
| Reefer #19511 URTC Heileman Brewing billboard | BB28 | 15 |
| Reefer #23214 URTX Carnation Milk billboard reefer | BB28 | 26 |
| Reefer #30041 URTX Fairmont Creamery billboard | BB28 | 46 |
| Reefer #35352 (as #75352 BREX) (9/26) | BB12 | 9 |
| Reefer #35800 original paint scheme BP | BB12 | 9 |
| Reefer #36000 FGEX and drawings | BB28 | 49 |
| Reefer #39901 (as milk car #951) (7/27) | BB12 | 5 |
| Reefer #43945 FGEX Red Oak (3/38) | BB28 | 57 |
| Reefer #50131, 50240 CX C&S (1936/1950) | BB12 | 10 |
| Reefer #60155 FDL Fairmont Creamery billboard reefer | BB28 | 46 |
| Reefer #67001 WP (Union Pacific) Havelock built | BB12 | 40 |
| Reefer #67004 WP (Western Pacific) Havelock built | BB12 | 40 |
| Reefer #74200 BREX with wrinkled herald decal | BB12 | 20 |
| Reefer #74285 BREX simplified lettering (7/67) | BB12 | 21 |
| Reefer #74398 BREX (1950) | BB12 | 6 |
| Reefer #74514 BREX wood sides (1944) | BB16 | 36 |
| Reefer #74518, 74558 BREX (1962/1965) | BB12 | 15 |
| Reefer #74617, 74623 BREX lettering variations | BB12 | 16 |
| Reefer #74637 BREX plywood sheathing (1960) | BB12 | 16 |
| Reefer #74698-74700 BREX experimental reefers | BB12 | 17/21 |
| Reefer #74699 BREX (1950) | BB12 | 6 |
| Reefer #74700 BREX (1950) | BB12 | 6 |
| Reefer #74754 BREX BP (4/37) | BB12 | 12 |
| Reefer #74754 BREX first all steel BREX (4/37) | BB16 | 36 |
| Reefer #74769 (as BN #950608 tool car) (3/84) | BB12 | 14 |
| Reefer #74786 BREX roof detail (8/69) | BB12 | 13 |
| Reefer #74818 BREX non-standard body (8/73) | BB12 | 13 |
| Reefer #74836 BREX forked rib Dreadnought (6/51) | BB12 | 12 |
| Reefer #75352 BREX (ex Q #35352) (9/26) | BB12 | 9 |
| Reefer #75352 BREX fishbelly center sill drawings CP | BB28 | 48 |
| Reefer #75357, 75792 BREX block serif lettering | BB12 | 10 |
| Reefer #76000 BREX BP | BB12 | 24 |
| Reefer #76070 BRE (ex BREX) (3/77) | BB12 | 24 |
| Reefer #76250 BREX BP | BB12 | 24 |
| Reefer #76337 BREX (5/72) | BB12 | 24 |
| Reefer #76409 BREX (c1926) | BB12 | 4/9 |
| Reefer #77009 RBBQ solid forest green | BB12 | 39 |
| Reefer #77110 RBBQ no roof walks | BB12 | 39 |
| Reefer #77175 RBBQ preservation news | Z 45 | 10 |
| Reefer #78010, 78179, 78299 RBBQ | BB12 | 36 |
| Reefer #78233 BREX (as #239414 ice service) | BB12 | 7 |
| Reefer #78556 BREX (c1942) | BB12 | 7 |
| Reefer #78556 BREX truss rod | BB28 | 48 |
| Reefer #79000, 79100, 79255 RBBX BP | BB12 | 31 |
| Reefer #79312 RBBX | BB12 | 32 |
| Reefer #79418 RBBX Cascade green | BB12 | 33 |
| Reefer #79464 BREX amended RBL paint scheme | BB12 | 33 |
| Reefer #79474 RBBX | BB12 | 32 |
| Reefer #79575, 79649 RBBX 10 ft doors | BB12 | 34 |
| Reefer #79741, 79750 RBBX foam insulation | BB12 | 35 |
| Reefer #79797 RBBX simplified green scheme | BB12 | 35 |
| Reefer #79810 RBBQ off-center plug doors CP | BB12 | 37 |
| Reefer #79906 RBBX welded sides | BB12 | 33 |
| Reefer #79950 RBBQ 12 foot doors Proctor & Gamble | BB12 | 38 |
| Reefer #80000 BRDX dry ice (1947) | BB16 | 36 |
| Reefer #80000 BRDX dry ice CP (1947) | BB12 | 18/19 |
| Reefer #239414 ice service mineral red | BB12 | 7 |
| Reefer #239554, 239569, 239580-1 ice service | BB12 | 11 |
| Reefer #239606 ice service | BB12 | 21 |
| Reefer #239607 ice service (7/78) | BB12 | 13 |
| Reefer billboards - full article | BB28 | 4 |
| Reefer ceiling fan diagram | BB12 | 50 |
| Reefer charcoal heaters | BB12 | 8 |
| Reefer construction diagram | BB12 | 50 |
| Reefer Cudahy Sunlight billboard reefer (1937) | BB28 | 47 |
| Reefer first outside braced #5100 BRMX | BB12 | 29 |
| Reefer foam insulation advert (1963) | BB12 | 35 |
| Reefer hair insulation shed, Plattsmouth (3/84) | BB12 | 44 |
| Reefer ice loading | BB12 | 1 |
| Reefer icing dock Denver (3/64) | BB12 | 6 |
| Reefer icing dock Denver using aircraft parts housings | BB15 | 33 |
| Reefer paint scheme pre-1926 | BB12 | 9 |
| Reefer paint scheme, C&S and FW&D (Z Q&A 97-9, Z 36) | Z 36 | |
| Reefer Preco air circulating equipment | BB12 | 20 |
| Reefer Preco ceiling fan diagram | BB12 | 50 |
| Reefer proposed lettering scheme (1925) | BB12 | 52 |
| Reefer repair shop Havelock (1968) | BB12 | 45 |
| Reefer roster including C&S and FW&D | BB12 | 46-50 |
| Reefer service preparation diagram (1928) | BB12 | 45 |
| Reefer SRL Swift Premium Ham billboard reefer | BB28 | 61 |
| Reefers - full article | BB12 | 4 |
| Refreshment car vending machines (1966) | BB22 | 20 |
| Refrigerant for Zephyr Kinetic Chemicals Inc. Freon advert (4/34) | BB43 | 39 |
| Refrigerated semi- trailers, Chicago yards | BB12 | 43 |
| Refrigerator/store car MoW #250124 steel gang | BB25 | 134+ |
| Rend & Co. mine, Rend City (1920-2) | BB35 | 201 |
| Reo bus advert view (1929) | BB24 | 7 |
| Reo buses Burlington Trailways (1944) | BB24 | 34 |
| Reporting marks position change (c1913) | BB25 | 97 |
| Republican campaign Burlington (2nd) office car | BB17 | 57 |
| Rerailing wrecked SD-7 #323 West Frankfort (c1962) | BB35 | 129 |
| Reservoirs, air brake equipment baggage class BA-19/19A | BB36 | 57 |
| Restaurant ex office car #99 (1979) | BB17 | 41 |
| Retarder control panel West Willis Yard, Galesburg(Z 97-7, Z 36) | Z 36 | |
| Retarder operator and panel Cicero Classification Yard advert | BM | 3 |
| Retarder System panel Union Switch & Signal | Z 36 | 24 |
| Rider-baggage #1430 (ex MB-22 #1940) | Z 44 | 16 |
| Rider-baggage #1492 (BA-10A) Corbin model | BB36 | 20 |
| Ridgway spark arrestor folded down | BB41 | 63 |
| Ridgway spark arrestor loco #537 (NG) Denver (5/30) | BB41 | 43 |
| Rio Grande “flying” logo tender #1700 (M-64) D&RGW (1/40 | BB42 | 65 |
| Rio Grange in Old English script coach #1001 D&RGW “ (6/39) | BB42 | 228 |
| Rival Pullman sleeper BP (1915) | BB40 | 23 |
| Rival Pullman sleeper wrecked Cole Creek (9/23) | BB40 | 36 |
| Rival Pullman sleeper damaged interior/exterior (10/23) | BB40 | 36 |
| River Canyon, Wy. (9/68) | C 00 | 24 |
| Riverside, Il. river bridge (1967) | C 94 | 4 |
| Riverside, Il. snow scenes (2/36) | BB33 | 29 |
| Riverton depot | BB22 | 51 |
| Riverview observation lounge history | BB42 | 247 |
| Riverview obs-lounge as rip track lunchroom (later 250051) Lincoln (9/62) | BB42 | 252 |
| Riverview obs-lounge Expo Flyer Belden depot (c1939) | BB42 | 252 |
| Riverview obs-parlor-lounge plan | BB42 | 250 |
| Road bed section (cut) plans | Z 22 | 16 |
| Road bed section (fill) plans | Z 20 | 8 |
| Road bridge Aurora “Everywhere West” sign (5/52) | C 89 | 22 |
| Road crossing height clearance sign plans C&S | DS 8 | 10 |
| Road Crossing sign (3 Main Tracks) | DS10 | 49 |
| Road crossing sign plan (7/27) | DS 8 | 1-2 |
| Road crossing sign plan C&S (8/30) | DS 8 | 3 |
| Road crossing sign plans (7/30) | Z 26 | 20 |
| Road underpass “Everywhere West” sign (c1968) | C 92 | 6 |
| Roadmaster & MoW Association Convention Chicago (c1950) | Z 50 | 10F |
| Roadway Bridges Load Limit sign | DS10 | 94 |
| Robert Peary Pullman car (later Q Black Hawk 2nd) | BB17 | 51 |
| Robin Hood Beer billboard reefer | BB28 | 5 |
| Rochester, Io. flag stop | BB30 | 64 |
| Rock Island - Clinton valuation section map (1918) | BB37 | 58 |
| Rock Island bus depot (9/41) | BB24 | 54 |
| Rock Island joint tracks with CB&Q, Burlington | BB30 | 28 |
| Rock Island Railway - full article | BB19 | 4 |
| Rock Port, Langdon & Northern Railway - short history | BB45 | 50/84 |
| Rock Port, Mo. yards (RPL&N) c1933 | BB45 | 84 |
| Rocky Mountain Arsenal Army guard car (2/65) | BB 2 | 15 |
| Rocky Mountain National Park CB&Q postcard | Z 57 | 27+ |
| Rocky Mountain Produce Co. billboard reefer drawings | BB28 | 39 |
| Rodgers Hart ballast cars #15071, 15100 C&S | BB32 | 63 |
| Rohrer, David B&MR incorporator | BB23 | 7 |
| Rolled mouldings for Zephyr Herron-Zimmers Moulding Co. advert (4/34) | BB43 | 38 |
| Roller bearings for Zephyr Timken Bearings advert (4/34) | BB43 | 36 |
| Roller bearing hopper class HT-10, orange paint | DS 2 | 1 |
| Roscoe, Io. depot and water tank | BB30 | 36 |
| Ross & Co. billboard reefer drawings | BB28 | 34 |
| Ross, George T. Iowa superintendent (1905) | BB23 | 58 |
| Roster loco class A-2 rebuilt engines | BB45 | 95 |
| Roster loco class A-6 | BB45 | 95 |
| Rotary plow #011, 0270 C&S comparative size plan | BB38 | 46 |
| Rotary plow #064 DL&G Alpine Tunnel (1897) | BB38 | 27 |
| Rotary plow #064 DL&G less carbody (c1905) | BB38 | 27 |
| Rotary plow #064 DL&G rebuilt with cupola (c1895) | BB38 | 27 |
| Rotary plow #064 UP similar to #205026-7 BP (1913) | BB38 | 42 |
| Rotary plow #075 UP, #205099 Pocatello (3/50) | BB38 | 94 |
| Rotary plow #99220 C&S Boreas Pass (1935) | BB38 | 47 |
| Rotary plow #99220 C&S Denver roundhouse (11/33) | BB38 | 37 |
| Rotary plow #99220 C&S plan (c1910) | BB38 | 35 |
| Rotary plow #99220 C&S on DB&W lines Boulder (1/14) | BB38 | 36 |
| Rotary plow #99220 C&S Platte Canyon (12/13) | BB38 | 34 |
| Rotary plow #99220 C&S rebuilt, new tender Como (1935) | BB38 | 46 |
| Rotary plow #99220 C&S clearing Uneva Lake slide (c1930) | BB38 | 37 |
| Rotary plow #99220 C&S wheel hood braces added (c1920) | BB38 | 35 |
| Rotary plow #99220 C&S wheel shaft broken Leadville (4/51) | BB38 | 76 |
| Rotary plow #99220, 99221 C&S together Dickey (1936) | BB38 | 48 |
| Rotary plow #99221 C&S after last usage Climax (2/60) | BB38 | 107+ |
| Rotary plow #99221 C&S being rebuilt Denver shops (8/49) | BB38 | 77 |
| Rotary plow #99221 C&S clearing Uneva Lake slide (1936) | BB38 | 49 |
| Rotary plow #99221 C&S converted to narrow gauge (1936) | BB38 | 48 |
| Rotary plow #99221 C&S Denver (5/18) | BB38 | 30 |
| Rotary plow #99221 C&S plan as narrow gauge (c1935) | BB38 | 33 |
| Rotary plow #99221 C&S Elbert depot (12/13) | BB38 | 32 |
| Rotary plow #99221 C&S front windows replaced(3/10) | BB38 | 34 |
| Rotary plow #99221 C&S last steam pusher loco (2/60) | BB38 | 106+ |
| Rotary plow #99221 C&S plans after rebuilding (1949) | BB38 | 78 |
| Rotary plow #99221 C&S post rebuilding Denver CP (12/49) | BB38 | 78-9 |
| Rotary plow #99221 C&S post retirement Denver (10/72) | BB38 | 107+ |
| Rotary plow #99221 C&S prior to rebuilding Denver (4/49) | BB38 | 77 |
| Rotary plow #99221 C&S, loco #641 Climax (2/60) | BB38 | 106+ |
| Rotary plow #99221 C&S, loco #800 (E-4-A) C&S (12/13) | BB38 | 31 |
| Rotary plow #205099 wheel front view CP (12/49) | BB38 | 86 |
| Rotary plow #205027 boiler backhead CP (10/49) | BB38 | 81 |
| Rotary plow #205027 boiler converted to oil firing CP (10/49) | BB38 | 80 |
| Rotary plow #205027 wheel drive mechanism CP (10/49) | BB38 | 81 |
| Rotary plow #205027 headlight above wheel Alliance (1/49) | BB38 | 69 |
| Rotary plow #205027 headlight from M-2-A loco (1/49) | BB38 | 69 |
| Rotary plow #205027 Nebraska (c1935) | BB38 | 43 |
| Rotary plow #205027 with auxiliary tender (c1938) | BB38 | 44 |
| Rotary plow #205028 (c1940) | BB27 | 16 |
| Rotary plow #205028 cuckoo clock headlight (1/49) | BB38 | 72 |
| Rotary plow #205028 Plainview (c1938) | BB38 | 45 |
| Rotary plow #205028 two headlights (1/49) | BB38 | 71 |
| Rotary plow #205028 with side truss rods (1/49) | BB38 | 69 |
| Rotary plow #205098 after rebuilding Alliance CP (12/49) | BB38 | 82-3 |
| Rotary plow #205098 auxiliary tender #205920 (6/65) | BB38 | 84 |
| Rotary plow #205098 builder’s plate 12/49) | BB38 | 83 |
| Rotary plow #205098 cab interior views CP (12/49) | BB38 | 84 |
| Rotary plow #205098 clearance diagram (12/49) | BB38 | 82 |
| Rotary plow #205098 stored Alliance roundhouse (8/64) | BB38 | 108+ |
| Rotary plow #205098 tender class O-2-B CP (12/49) | BB38 | 82-3 |
| Rotary plow #205098 view along roof CP (12/49) | BB38 | 83 |
| Rotary plow #205098 wheel front view CP (12/49) | BB38 | 83 |
| Rotary plow #205099 (as BN #972558) (c1978) | BB38 | 110 |
| Rotary plow #205099 (as BN #972558) cab interior (1978) | BB38 | 110 |
| Rotary plow #205099 (as BN #972558) engine area | BB38 | 111 |
| Rotary plow #205099 (as BN #972558) rear view (2/77) | BB38 | 110 |
| Rotary plow #205099 (ex #205028) (1968) | BB27 | 17 |
| Rotary plow #205099 after rebuilding Denver CP (12/49) | BB38 | 87 |
| Rotary plow #205099 cab and lighting improved (10/64) | BB38 | 108+ |
| Rotary plow #205099 cab interior views CP (12/49) | BB38 | 88 |
| Rotary plow #205099 clearance diagrams (12/49) | BB38 | 86 |
| Rotary plow #205099 connected to F-3 #1521 UP (3/50) | BB38 | 94 |
| Rotary plow #205099 connection to F-3 #135 CP (12/49) | BB38 | 90 |
| Rotary plow #205099 demonstrating wheel CP (12/49) | BB38 | 90 |
| Rotary plow #205099 Denver shops (1/50) | BB 5 | 20 |
| Rotary plow #205099 forward viewing tube CP (3/50) | BB38 | 93 |
| Rotary plow #205099 hood interior views CP (12/49) | BB38 | 89 |
| Rotary plow #205099 motor installation Denver CP (11/49) | BB38 | 85 |
| Rotary plow #205099 powered by SD-7 (1968) | BB38 | 109 |
| Rotary plow #205099 rear truck (c1950) | BB38 | 88 |
| Rotary plow #205099 rear views Pocatello (3/50) | BB38 | 94 |
| Rotary plow #205099 testing wheel Denver CP (3/50) | BB38 | 93 |
| Rotary plow #205099 view along roof CP (12/49) | BB38 | 88 |
| Rotary plow #205099 wheel drive shaft Denver CP (11/49) | BB38 | 85 |
| Rotary plow #205099 with FT #106 Denver CP (3/50) | BB38 | 93 |
| Rotary plow #205099, #075 UP Pocatello (3/50) | BB38 | 94 |
| Rotary plow #205099, F-3 #135 demonstration CP (12/49) | BB38 | 90 |
| Rotary plow #972558 BN (ex Q #205099) (c1978) | BB38 | 110 |
| Rotary plow #972558 BN (ex Q #205099) cab interior (1978) | BB38 | 110 |
| Rotary plow #972558 BN (ex Q #205099) cab views (c1978) | BB38 | 110 |
| Rotary plow #972558 BN (ex Q #205099) engine area | BB38 | 111 |
| Rotary plow #972558 BN (ex Q #205099) rear view (2/77) | BB38 | 110 |
| Rotary plow #972558 BN (ex Q #205028) (1/76) | BB27 | 17 |
| Rotary plow #972559 BN under repair (10/83) | BB26 | 96+ |
| Rotary plow cab interior views (c1978) | BB38 | 111 |
| Rotary plow cab view from cab (2/89) | BB38 | 111 |
| Rotary plow comparative testing (3/50) | BB38 | 91 |
| Rotary plow cutting wheel types | BB38 | 43 |
| Rotary plow front truck with flanger plow BP (c1910) | BB38 | 42 |
| Rotary plow operational responsibility instructions (1938) | BB38 | 45 |
| Rotary plow rebuilding program 1949 – part article | BB38 | 76 |
| Rotary plow similar to #205026-7 BP (c1915) | BB38 | 42 |
| Rotary plow tender with cover plates (1/49) | BB38 | 69 |
| Rotary plow without body | BB38 | 3 |
| Rotary snow plow operation rules | BB38 | 119 |
| Rotary snow plows – full article | BB38 | |
| Round Up office car | BB17 | 59/75 |
| Round Up office car interiors | BB17 | 78-9+ |
| Roundhouse, full circle, Burlington | BB23 | 40-2 |
| Roundhouse roll-up doors Lead (c1903) | BB41 | 74 |
| Roundhouse, wooden, Bridgeport | BB31 | 4/9 |
| Rowley stock yards (11/45) | BB25 | 17 |
| Royal American Show train Camp Point, Il. (c1962) | C 91 | 16 |
| Royal Gorge Hanging Bridge narrow gauge (10/14) | BB42 | 14 |
| Royal Gorge Hanging Bridge narrow gauge (c1885) | BB42 | 6 |
| Royal Scot LM&S, #3000 (S-4), #35 Century of Progress (1933) | BB45 | 60 |
| Royal Scott and Aristocrat Aurora elevated track (1933) | BB46 | 29 |
| Royal Scot and loco #3000 Aurora elevated track (10/33) | BB33 | 17 |
| Royal Scot tour (1933) | BB33 | 16-7 |
| Royalton O-1-A crew (3/41) | BB35 | 50 |
| R.P.I. Award Winner 1966 gold freight cars | BB 7 | 20 |
| RPL&N – see Rock Port, Langdon & Northern Railway – history | BB45 | 84 |
| RPO #1 H&StJ (replica) history | BB45 | 58 |
| RPO #1 H&StJ, loco #35 (replicas) Cleveland, Oh. pageant (1936) | BB45 | 64 |
| RPO #1 H&StJ, loco #35 (replicas) display Creston Ia. (8/46) | BB45 | 69 |
| RPO #1 H&StJ, loco #35 (replicas) in tow Red Oak (3/37) | BB45 | 65 |
| RPO #1 H&StJ, loco #35 (replicas), Hannibal, Mo. (9/35) | BB45 | 63 |
| RPO #1 H&StJ, loco #35 B&MR (replicas) Creston yard (6/59) | BB45 | 74 |
| RPO #1 H&StJ, loco #35 B&MR (replicas) display Western Springs (1962) | BB45 | 77+ |
| RPO #1 H&StJ, loco #35 B&MR (replicas) displayed Bushnell, Il. (1954) | BB45 | 73 |
| RPO #1 H&StJ, loco #35 B&MR (replicas) displayed La Grange (9/54) | BB45 | 72-3+ |
| RPO #1 H&StJ, loco #35 B&MR (replicas) displayed Red Oak (8/53) | BB45 | 73 |
| RPO #1 H&StJ, loco #35 B&MR (replicas) in tow Red Oak (4/59) | BB45 | 76+ |
| RPO #1 H&StJ, loco #35 B&MR (replicas) in tow Red Oak (5/70) | BB45 | 80 |
| RPO #1 H&StJ, loco #35 B&MR (replicas) St Joseph, RPO centennial (1962) | BB45 | 75 |
| RPO #4 Fulton County narrow gauge (1903) | BB 8 | 27 |
| RPO #13 C&S (4/37) | BB 8 | 27 |
| RPO #32 FW&D (MA-11) (12/66) | BB 8 | 34 |
| RPO #70 B&MR (renumbered Q #2126) (1900) | BB 8 | 9 |
| RPO #253 C&S (MB-22) | BB 8 | 33 |
| RPO #253 C&S (MB-22) internal views | BB 8 | 34 |
| RPO #253 C&S (MB-22) rebuilt BP (11/24) | BB40 | 21 |
| RPO #253 C&S (MB-22) wrecked (9/23) | BB40 | 28 |
| RPO #320 C&S Silver Tidings (4/65) | BB 8 | 37 |
| RPO #328-331 C&S Denver (6/22) | BB 8 | 10 |
| RPO #479 North Coast Limited (5/69) | BB 8 | 37 |
| RPO #907 Fast Mail train (c1888) | BB 8 | 6 |
| RPO #908 & 914 Fast Mail train (c1888) | BB 8 | 6 |
| RPO #1601 Silver Mail (5/63) | BB 8 | 36 |
| RPO #1602 Silver Post and internal view (1/48) | BB 8 | 37 |
| RPO #1602 Silver Post being loaded Chicago | BB 8 | 4 |
| RPO #1602 Silver Post internal views | BB 8 | 19 |
| RPO #1603 Silver Page | BB 8 | 25 |
| RPO #1604 Silver Pouch (5/68) | BB15 | 16 |
| RPO #1604 Silver Pouch Lincoln (9/68) | BB 8 | 36 |
| RPO #1655 Corbin model | BB36 | 20 |
| RPO #1655 New Market, Io. (1935) | BB 8 | 25 |
| RPO #1655 New Market, Io. (7/35) | BB 3 | 11 |
| RPO #1805-6 drawings | BB 8 | 26 |
| RPO #1819 Alliance (c1925) | BB37 | 10 |
| RPO #1892 Alliance (10/64) | BB 8 | 31 |
| RPO #1893 (model) | Z 57 | 13+ |
| RPO #1914 Lincoln (10/68) | BB 8 | 34 |
| RPO #1929 Somonauk (7/45) | BB33 | 91 |
| RPO #1943 (MB-22) Lincoln (4/68) | BB37 | 85 |
| RPO #1944 shadow lined (3/51) | BB15 | 9 |
| RPO #1945 (MB-23) | BB 8 | 33 |
| RPO #1947 (MB-23) aluminum paint Denver (1962) | BB 8 | 34 |
| RPO #2001 and drawing (c1905) | BB 8 | 24 |
| RPO #2126 (as #70 B&MR) (1900) | BB 8 | 9 |
| RPO #2151 U.S. Mail Transfer Depot, Council Bluffs (c1910) | BB45 | 19 |
| RPO #2221 Aurora BP (9/04) | BB 8 | 21 |
| RPO #2225 (7/07) | BB16 | 35 |
| RPO #2319 (MA-10) interior/exterior BP views (8/16) | BB 8 | 30-1 |
| RPO #2323 (MA-10) Lincoln (10/65) | BB 8 | 31 |
| RPO #2330 (model) | Z 57 | 13+ |
| RPO #2340 (MA-11) BP (12/22) | BB 8 | 32 |
| RPO #2343 Nebraska Zephyr (7/63) | BB22 | 19 |
| RPO #2346 train #26 (7/66) | BB36 | 44 |
| RPO #2630 Galesburg (1905) | BB 8 | 28 |
| RPO #2725 ex motor car (c1950) | C 92 | 12 |
| RPO #2726 coach-baggage-mail (ex motor car #9847) | BB 8 | 35 |
| RPO #2752 coach-baggage-mail internal/external | BB 8 | 35 |
| RPO #2752 coach-baggage-mail modelling article, BP | Z 57 | 10+ |
| RPO #3003 (CF-7) and plans | BB30 | 74 |
| RPO #3004 (CF-7) Red Oak (1942) | BB 8 | 23 |
| RPO #3004 (CF-7) Red Oak (1945) | BB36 | 9 |
| RPO #3027 Derby, Co. (12/20) | BB 8 | 28 |
| RPO 40 foot cars - article | BB 8 | 22 |
| RPO 60 foot standard car floor plan | BB 8 | 40 |
| RPO B&MR 52' series (c1902) | BB44 | 53 |
| RPO Buffalo Bill Chicago Railway Fair 1948 | BB 8 | 27 |
| RPO centennial postcard (1962) | BB45 | 75 |
| RPO government specifications | BB 8 | 20 |
| RPO H&StJ replica Galena, Il. | Z 51 | 12+ |
| RPO H&StJ replica | Z 50 | 15+ |
| RPO Hannibal & St. Joseph & replica | BB 8 | 5 |
| RPO internal views (1900) | BB 8 | 8 |
| RPO internal views | BB 8 | 18-19 |
| RPO lettering guides C&S | BB 8 | 39 |
| RPO lettering guides | BB 8 | 38 |
| RPO replica & loco Missouri (H&StJ) (Z Q&A 05-6, Z 50) | Z 51 | |
| RPO rosters | BB 8 | 21 |
| RPO routes listing | BB 8 | 15-17 |
| RPO series #110-2 C&S Empire, Co. (1894) | BB 8 | 27 |
| RPO series #1600-10 Bucklin (1920) | BB 8 | 25 |
| RPO series #1700-19 Beardstown (12/17) | BB 8 | 26 |
| RPO series #1850-1 drawing | BB 8 | 23 |
| RPO series #1889-99 (c1935) | BB 8 | 11 |
| RPO series #1900-9 Denver (10/22) | BB 8 | 26 |
| RPO series #1910-49 Chicago (1925) | BB 8 | 11/14 |
| RPO series #1945-9 (MB-23) plan | BB 8 | 33 |
| RPO series #2075-80 drawing | BB 8 | 22 |
| RPO series #2315-24 (MA-10) plan | BB 8 | 30-31 |
| RPO series #2325-46 (MA-11) plan and internal view | BB 8 | 32 |
| RPO series #252-6 C&S (MB-22) drawing | BB40 | 21 |
| RPO series #2750-1 Edgemont (10/33) | BB 8 | 35 |
| RPO series #27-8 FW&D plan | BB 8 | 29 |
| RPO series #3003-4 drawing | BB 8 | 22 |
| RPO series #328-31 C&S plan and lettering diagram | BB 8 | 29 |
| RPO series #3300 Red Oak (9/39) | BB36 | 8 |
| RPO-baggage #13 C&S NG, coach #76 C&S NG Chicago Rail Fair (1948) | BB45 | 71 |
| RPO-baggage #2 MI&N (1897) | BB17 | 30 |
| RPO-coach-baggage Shenandoah (2/24) | BB45 | 33 |
| RS-3 #8255 NYC (as Midland Railway ) Norwood, Ks. (2007) | Z 56 | 4+ |
| Rubber supplies for Zephyr United States Rubber Co. advert (4/34) | BB43 | 26-7 |
| Ruby Basin loco #3 DCR (NG) (later Q #535) BP (1891) | BB41 | 20 |
| Ruby Basin loco #3 DCR (NG) (later Q #535) track wash out (1891) | BB41 | 21 |
| Ruby Basin loco #3 DCR (NG) (later B&MR #498) | BB44 | 74 |
| Russell & Erwin Manufacturing Co. locks & trims for Zephyr advert (4/34) | BB43 | 36 |
| Rust-chek rail protective coating advert | Z 55 | 25 |
| Ryan & Johnson coal pusher on loco T-1 (1908) | BB34 | 9/17 |