| Subject/Photo | Publication | Page |
| D&IMC buses, timetable and route map | BB24 | 27-9 |
| D&RGW pool power Chicago-Salt Lake City - article | Z 11 | 3 |
| D&RGW “Scenic Line of the World” logo | BB42 | 4 |
| D&RGW passenger service research report (1942) | BB42 | 142 |
| D-Bills (D-4 locos) Black Hills | BB29 | 28-31 |
| Dailey Brothers Circus train Washington, Io. (8/48) | BB30 | 70-1 |
| Daily Engine Report form 2218 (6/36) | BB41 | 61 |
| Damage Free (DF) box car markings | BB 7 | 16 |
| Danish Royalty Zephyr #9908 2 car consist (4/39) | BB13 | 29 |
| Darlington loco SJ&DM narrow gauge (later B&W #3) | BB30 | 8 |
| Data Sheet #1 - 55 ton composite twin hoppers class HT-7/8 | | |
| Data Sheet #2 - 70 ton triple hoppers class HT10/A/B/C/D | | |
| Data Sheet #3 - 100 ton quad hoppers class HT-11/13/14 | | |
| Data Sheet #4 - USRA double sheathed box cars class XM-24 | | |
| Data Sheet #5 - tank cars class TM-3 | | |
| Data Sheet #6 - single sheathed box cars class XM-25/26 | | |
| Data Sheet #7 - composite gondolas class GA-2/15, GS-1/2/5/7/8 | | |
| Data Sheet #8 - standard signs #1 | | |
| Data Sheet #9 - waycar #13513 class NE-10 | | |
| Data Sheet #10 – standard track signs #2 | | |
| Data Sheet #11 – diesels paint list | | |
| Davenport 0-4-0 locos sugar beet dinkies | BB32 | 53-9 |
| Davenport depot - full article | BB37 | 58 |
| Davenport depot current appearance | BB37 | 64-5+ |
| Davenport depot interior plans (7/23) | BB37 | 59 |
| Davenport depot interior views (2000) | BB37 | 65+ |
| Davenport depot painting (Paul Norton) | BB37 | 62 |
| Davenport depot plans (9/24) | BB37 | 60 |
| Davenport, Rock Island & North Western Rwy. brief history | BB37 | 58 |
| Davenport track plan valuation drawing (1918) | BB37 | 59 |
| David Beck Memorial Display, Mendota Museum (9/07) | Z 55 | 3+ |
| David Beck obituary | Z 50 | 5 |
| David City, Ne. depot (9/68) | C 00 | 26 |
| Dawn To Dusk run – see Zephyr Dawn to Dusk Run | | |
| Dayman Arsenal Zephyr #9908 & guard car (6/63) | BB13 | 25+ |
| Dayton's Bluff, St Paul (10/27) | BB29 | 50-1 |
| DCR – see Deadwood Central Railroad – full article | BB41 | 10 |
| DCR part loco roster | BB44 | 97 |
| DCSP Aerocoach bus lettered “Trailways” | BB24 | 39 |
| DCSP route and buses | BB24 | 30-3 |
| Deadwood – Lead timetable (1892) | BB41 | 13 |
| Deadwood aerial view (c1900) | BB41 | 11 |
| Deadwood branch abandonment (Z Q&A 96-6, Z 33) | Z 33/34 | |
| Deadwood Central brief history | BB34 | 3 |
| Deadwood Central part loco roster | BB44 | 97 |
| Deadwood Central Railroad – see DCR – full article | BB41 | 10 |
| Deadwood Central Railroad loco roster and short history | BB41 | 76 |
| Deadwood Central token - article | BB34 | 3 |
| Deadwood depot (1900) | Z 37 | 4/5 |
| Deadwood dual track (1920) | BB29 | 22 |
| Deadwood engine house, museum conversion - article | BB32 | 3 |
| Deadwood freight house restored | Z 35 | 3 |
| Deadwood loco #1 DCR (0-6-0) Pluma (c1900) | BB41 | 12 |
| Deadwood loco #1 DCR (0-6-0T) pre-conversion Lead depot (c1892) | BB41 | 77 |
| Deadwood loco #1 DCR wrecked Gold Run Gulch (c1892) | BB41 | 12 |
| Deadwood Mallet shed (3/48) | BB32 | 3 |
| Deadwood Mallet shed (7/51) | BB 9 | 27 |
| Deadwood roundhouse, freight yard (1950) | Z 37 | 4/5 |
| Deadwood terminal | BB34 | 24 |
| Decorated loco #105 B&MR (A-2) excursion Plattsmouth (1887) | BB44 | 101 |
| Decorated loco #3704 presidential special B&MR Lincoln (4/03) | BB44 | 70 |
| Denver & Interurban Motor Co. - see D&IMC | BB24 | 27 |
| Denver 100’ truss turntable (1958) | BB10 | 3 |
| Denver 50th Anniversary of first train (5/32) | BB45 | 57 |
| Denver 7th Street C&S roundhouse | BB10 | 3 |
| Denver 19th St. track scale | BB27 | 49 |
| Denver 23rd St. coachyard (1963) | BB22 | 17 |
| Denver 31st St. track scale house (c1925) | BB27 | 49 |
| Denver bridges preserved | BB25 | 3 |
| Denver coaling tower (c1937) | BB41 | 59 |
| Denver diesel shop internal view (1964) | BB10 | 4 |
| Denver dome car washer (1947) | BB42 | 198 |
| Denver freight house (3/39) | BB20 | 3 |
| Denver Locomotive Shops - article addendum | BB 9 | 30 |
| Denver Locomotive Shops - full article | BB 5 | 4 |
| Denver Ogle coaling tower (c1939) | BB21 | 17 |
| Denver produce dock (7/34) | BB28 | 11 |
| Denver railroads plan (1929) | BB 5 | 5 |
| Denver Rice Yard track scale house | BB27 | 55 |
| Denver shops (1982) | BB 5 | 24 |
| Denver shops aerial view (1924) | BB 5 | 1 |
| Denver shops aerial view (c1930) | BB 5 | 4 |
| Denver shops construction (1922) | BB 5 | 6 |
| Denver shops gantry crane (4/25) | BB41 | 31 |
| Denver shops internal view | C 93 | 2 |
| Denver shops internal views | BB 5 | 12-15 |
| Denver shops last overhaul loco #6320 (M-4-A) (9/55) | BB21 | 53 |
| Denver shops plan | BB 5 | 8 |
| Denver shops power house and offices (8/46) | BB 5 | 10 |
| Denver shops repair shop (c1924) | BB40 | 42 |
| Denver shops staff | BB 5 | 16-7 |
| Denver shops views (c1925) | BB 5 | 8 |
| Denver South Tower (1940) | BB10 | 7 |
| Denver ticket office Burlington Lines | Z 56 | 18 |
| Denver ticket office Burlington Lines | Z 57 | 19 |
| Denver ticket office Burlington Lines (Z Q&A 08-06, Z 56) | Z 56 | |
| Denver Tower sleeper aluminum paint Denver (8/63) | BB42 | 247 |
| Denver Tower sleeper part history | BB42 | 246 |
| Denver turntable (1969) | BB 4 | 4 |
| Denver Union Station (8/62) | BB10 | 32 |
| Denver Union Station freight yards track plan | BB28 | 39 |
| Denver Union Station yards (8/38) | BB13 | 23 |
| Denver Union Station, Denver Zephyr (1/56) | C 05 | 2 |
| Denver Union Stock Yards (c1930) | BB25 | 4 |
| Denver Union Stock Yards aerial views | BB25 | 5-7 |
| Denver yard office using aircraft parts housing | BB15 | 33 |
| Denver Zephyr, loco #440 (A-2) exhibition engine, Aurora (10/40) | BB45 | 89 |
| Denver Zephyr (1949) | BB22 | 40 |
| Denver Zephyr arriving at Mendota (11/56) | C 09 | 16+ |
| Denver Zephyr art deco design | BB13 | 19 |
| Denver Zephyr Aurora passenger depot (9/38) | BB46 | 30 |
| Denver Zephyr cars in Saudi Arabia (Z Q&A 94-7, Z 29) | Z 29 | |
| Denver Zephyr catching mail | BB 8 | 13 |
| Denver Zephyr Chuck Wagon diner inside view (1956) | C 93 | 26 |
| Denver Zephyr consist (Z Q&A 97-12, Z 36) | Z 37 | |
| Denver Zephyr Denver Union Station (1/56) | C 05 | 2 |
| Denver Zephyr, Expo Flyer and City of Denver UP Denver Station (6/40) | BB42 | 80-1 |
| Denver Zephyr first run Derby, Co. (11/36) | BB13 | 23 |
| Denver Zephyr first run pacing bus (11/36) | BB24 | 17 |
| Denver Zephyr letterboards (Z Q&A 01-5, Z 44) | Z 44 | |
| Denver Zephyr Lisle 1957 Calendar | C 07 | 16+ |
| Denver Zephyr new inauguration Denver (10/56) | C 05 | 20/22 |
| Denver Zephyr passing Burlington Shops (1936) | BB26 | 43 |
| Denver Zephyr pooled slumber coaches (Z Q&A 01-7, Z 45) | Z 45 | |
| Denver Zephyr Pueblo, Co. (1/41) | BB32 | 21 |
| Denver Zephyr record run, Creston (10/36) | BB11 | 29 |
| Denver Zephyr with Æolus #4000 (2/38) | BB14 | 26/27 |
| Denver Zephyr with loco #4004 (S-4-A) (1939) | BB14 | 30 |
| Denver Zephyr Wood Tower, Burlington | BB23 | 69 |
| Denver Zephyr Wyanet, Il. (c1937) | Z 40 | 11 |
| Denver Zephyr Wyanet (c1937) (Z Q&A 99-2, Z 40) | Z 41 | |
| Denver-Colorado Springs Pueblo Motors - see DCSP | BB24 | 30-3 |
| Denver–St Louis through car service advert (1939) | BB42 | 36 |
| Denver-Salt Lake-Pacific Stages Inc. - see DSLP | BB24 | 31-3 |
| Denver/Cheyenne obs-lounge (ex Mississippi) Zephyr Connection (1/37) | BB42 | 251 |
| Denver/Cheyenne solarium-parlor #340 (1/37) | BB17 | 58 |
| Depot B&MR, two storey | BB44 | 9/12 |
| Depot buildings of the 20th Century - full article | BB37 | 4 |
| Depot buildings of the 20th Century - full article | BB37 | 4 |
| Depot canopies, Western Springs, plans | BB36 | 66-7 |
| Depot canopy, Western Springs (c1916) | BB36 | 65 |
| Depot canopy letters (Z Q&A 03-5, Z 46) | Z 48 | |
| Depot layouts, Nebraska (c1925) | BB31 | 8 |
| Depot mineral red and green West Chicago (9/55) | C 03 | 26+ |
| Depot name board signs (black gothic letters) (1958) | BB36 | 77 |
| Depot preservation news (1987) | BB17 | 3 |
| Depots, two story, Lines East (Z Q&A 95-1, Z 32) | Z 32 | |
| Derail post Red Oak (10/57) | BB21 | 63+ |
| Derail Post sign | DS10 | 71 |
| Derail sign and switch (9/63) | C 94 | 6 |
| Derail sign plan C&S (9/29) | DS 8 | 17 |
| Derailed wedge plow on flat car Centreville | BB38 | 58 |
| Derailments, various | BB35 | 196 |
| Dering Coal Co. No. 18 mine West Frankfort (c1915) | BB35 | 205 |
| Derrick #3 B&MR steam powered (1888) | BB18 | 12 |
| Derrick #099 C&S steam, plans | BB18 | 13 |
| Derrick #90157 (later #204205-9) double boom (1905) | BB18 | 14 |
| Derrick #99003 C&S steam, plans | BB18 | 13 |
| Derrick #99110 C&S plans | BB18 | 71 |
| Derrick #204205-9 (as #90157) double boom (1905) | BB18 | 14 |
| Derrick #D-8 FW&D steam, plans | BB18 | 13 |
| Derrick crane #204315 steam Plattsmouth (7/07) | BB16 | 34 |
| Derrick crane, bridge (c1915) | BB18 | 42 |
| Derrick double boom hand powered (1914) | BB18 | 12 |
| Derrick, hand operated, wrecked loco #96 B&MR derailed Omaha (1884) | BB44 | 79 |
| Derrick single boom hand powered | BB18 | 11 |
| Des Moines depot (6/52) | BB24 | 39 |
| Des Moines water tower (9/31) | BB 3 | 12 |
| Detector car – full article | BB39 | 36 |
| Detector car – see also Detector/tow car | | |
| Detector car #1 ARA (c1927) | BB39 | 37 |
| Detector car #1 ARA rebuilt (1931) | BB39 | 38 |
| Detector car #1 ARA towed by Burro crane (1929) | BB39 | 38 |
| Detector car #1 ARA towed by track speeder (c1927) | BB39 | 37 |
| Detector car #1 ARA with Sperry tow car #501 (1928) | BB39 | 37 |
| Detector car #1 Q/GN/NP tow car #9030 (1935) | BB39 | 42 |
| Detector car #1 Q/GN/NP tow car #9030 Aurora shops (2/34) | BB39 | 40 |
| Detector car #1 Q/GN/NP tow car #9030 Red Oak (7/39) | BB39 | 41 |
| Detector car #1 Q/GN/NP tow car #9040 Omaha (1940) | BB39 | 42 |
| Detector car #2 NP/Q/GN towed by Buda inspection vehicle | BB39 | 44 |
| Detector car #3 GN/Q/NP (1941) | BB39 | 45 |
| Detector car #3 GN/Q/NP internal views(1941) | BB39 | 45 |
| Detector car #3 internal views (4/68) | BB39 | 75+ |
| Detector car #3 rail brushes (4/68) | BB39 | 74+ |
| Detector car #136 Sperry Centralia (c1965) | BB35 | 231 |
| Detector car #DC-1 UP towed by Buda 619 vehicle (12/46) | BB39 | 60 |
| Detector car #X-101 (2nd) (12/41) | BB39 | 48 |
| Detector car ARA plan (12/40) | BB39 | 51 |
| Detector car crew pay rates (1948) | BB39 | 76 |
| Detector car internal views (1941) | BB39 | 45 |
| Detector car internal views (4/68) | BB39 | 75+ |
| Detector car outfit car (ex office car) | BB39 | 78 |
| Detector car outfit car (ex office car #97) (6/39) | BB35 | 149 |
| Detector car outfit cars ex office cars | BB17 | 33/37/39 |
| Detector car Q/GN/NP pool dissolution accounts (9/41) | BB39 | 56 |
| Detector car rail fissure theory article (1/31) | BB39 | 46 |
| Detector car support equipment – article | BB39 | 78 |
| Detector car tool car #250800 Red Oak (1/58) | BB39 | 79+ |
| Detector car tool car #250800 (ex baggage #1241) | BB16 | 56-7 |
| Detector car train orders | BB39 | 77 |
| Detector tow car – see Tow car - full article | BB39 | 36 |
| Detector/tow car #1/9040 St Joseph (12/42) | BB39 | 43 |
| Detector/tow car #102/501 Sperry New York (1928) | BB39 | 37 |
| Detector/tow car #110/110A Sperry New York (8/33) | BB39 | 47 |
| Detector/tow car #110/510 Sperry (c1930) | BB39 | 47 |
| Detector/tow car #2/9050 air horn visible Red Oak (7/63) | BB39 | 66 |
| Detector/tow car #2/9050 crew Aurora (2/56) | BB39 | 63 |
| Detector/tow car #2/9050 Galesburg (8/48) | BB39 | 57 |
| Detector/tow car #2/9050 large herald front Denver (10/62) | BB39 | 65+ |
| Detector/tow car #2/9050 Lodge Grass (2/65) | BB39 | 67+ |
| Detector/tow car #2/9050 magnets visible Lincoln (9/56) | BB39 | 62 |
| Detector/tow car #2/9050 Naperville (5/65) | BB39 | 67+ |
| Detector/tow car #2/9050 on flat car #92327 (c1960) | BB39 | 64 |
| Detector/tow car #2/9050 orange flashing light added (10/62) | BB39 | 65+ |
| Detector/tow car #2/9050 side ladders added (c1960) | BB39 | 64 |
| Detector/tow car #2/9050 small side heralds (10/58) | BB39 | 64 |
| Detector/tow car #2/9050 Wichita Falls (11/55) | BB39 | 62 |
| Detector/tow car #2/9050 wire antenna (10/65) | BB39 | 66 |
| Detector/tow car #2/9050 yellow window screens (c1956) | BB39 | 63 |
| Detector/tow car #2/B-74 NP (10/45) | BB39 | 55 |
| Detector/tow car #2/B-74 NP (8/46) | BB39 | 44 |
| Detector/tow car #3/9040 Somonauk depot (1949) | BB39 | 60 |
| Detector/tow car #3/9060 Centralia (1967) | BB39 | 73 |
| Detector/tow car #3/9060 connections (4/68) | BB39 | 74+ |
| Detector/tow car #3/9060 Denver (1963) | BB39 | 71+ |
| Detector/tow car #3/9060 Denver (3/60) | BB39 | 71+ |
| Detector/tow car #3/9060 Denver (5/58) | BB39 | 68+ |
| Detector/tow car #3/9060 heater exhaust missing (10/61) | BB39 | 70 |
| Detector/tow car #3/9060 lineside repairs (c1958) | BB39 | 68-9+ |
| Detector/tow car #3/9060 Napeville (1/65) | BB39 | 72-3+ |
| Detector/tow car #3/9060 on flat car #92426 (c1962) | BB39 | 70 |
| Detector/tow car #3/9060 twin headlights/orange flasher | BB39 | 70 |
| Detector/tow car #M-2/B-102 NP (as #X-4 Q/GN/NP) (1/42) | BB39 | 53 |
| Detector/tow car #M-2/B-102 NP (ex #X-4 Q/GN/NP) (1/58) | BB39 | 55 |
| Detector/tow car #M-2/B-102 NP (ex #X-4 Q/GN/NP) (1946) | BB39 | 55 |
| Detector/tow car #M-3/B-103 NP (7/53) | BB39 | 59+ |
| Detector/tow car #R-3 GN (9/60) | BB39 | 61 |
| Detector/tow car #R-3 GN plan (1947) | BB39 | 61 |
| Detector/tow car #R-5 GN (ex #X5 GN) Superior, Wi. (7/53) | BB39 | 58 |
| Detector/tow car #X-201/X-100 AAR St Paul (8/38) | BB39 | 49 |
| Detector/tow car #X-201/X-202 AAR Chicago (1940) | BB39 | 50 |
| Detector/tow car #X-204/X-203 AAR (c1955) | BB39 | 53+ |
| Detector/tow car #X-204/X-203 AAR Red Oak (c1945) | BB39 | 51 |
| Detector/tow car #X-204/X-203 AAR St Joseph (12/42) | BB39 | 43 |
| Detector/tow car #X-4 Q/GN/NP (10/45) | BB39 | 55 |
| Detector/tow car #X-4 Q/GN/NP Oregon, Il. (1/42) | BB39 | 53 |
| Detector/tow car #X-4 Q/GN/NP Toppenish (6/42) | BB39 | 54+ |
| Detector/tow car #X5 GN (later #R-5 GN) as new (6/48) | BB39 | 58 |
| Detector/tow car ARA plan (10/41) | BB39 | 52 |
| DF (Damage Free) box car markings | BB 7 | 16 |
| Diamond lignite loco stacks diagram | BB44 | 31 |
| Diamond Prospecting Company (Z Q&A 98-15, Z 38) | Z 38 | |
| Diana drawing room-parlor #4625 CP | BB22 | 8 |
| Dick & Bros. Brewery Co., Quincy, advert | BB28 | 18 |
| Diesel #100 Texas & Pacific motor (pre-Zephyr) (10/33) | BB13 | 5 |
| Diesel boxcab #511 EMC silver paint as TZ (10/36) | BB13 | 22 |
| Diesel center cabs - full article | BB 6 | 4 |
| Diesel engine for Zephyr Winton Engine Corp. advert (4/34) | BB43 | 24-5 |
| Diesel pool D.F.6 schematic diagram (5/55) | BB35 | 126 |
| DieseLiner buses Burlington Trailways | BB24 | 19 |
| Diesels awaiting repair Burlington Shops (1975) | BB26 | 94+ |
| Diesels, Chinese red painting (Z Q&A 95-5, Z 32) | Z 32/33 | |
| Diesels leased to C&S sugar beet trains | BB32 | 38-51+ |
| Diesels leased/borrowed for C&S sugar beet trains | BB32 | 74-5 |
| Diesels Paint List diagram Data Sheet (4/58) | DS11 | 16 |
| Diesels Paint List diagram Data Sheet (4/58) | Z 54 | 16B |
| Diner carbody yard office Herrin Junction (11/57) | BB35 | 45+ |
| Dinette-chair car #4850 Psyche internal views BP | BB22 | 6 |
| Dinette-coach #350-2 - article | BB 4 | 26 |
| Dinette-coach #351 (PB-20) (8/62) | BB 4 | 29 |
| Dinette-coach #352 (PB-20) (8/63) external/internal | BB 4 | 29 |
| Dining car #150 Ceres internal view CP (6/48) | BB22 | 12 |
| Dining car #151 Vulcan internal views CP | BB22 | 8 |
| Dining car #173 (DA-5) BP (4/17) | BB42 | 233 |
| Dining car #176 (DA-5) BP (4/17) | BB42 | 233 |
| Dining car #187 (DA-6) Denver (4/47) | BB42 | 234 |
| Dining car #191 Silver Inn Naperville wreck (4/46) | BB42 | 172-7 |
| Dining car #192 Silver Spoon (4/47) | BB42 | 235 |
| Dining car #192 Silver Spoon (7/38) | BB42 | 235 |
| Dining car #262 FW&D BP | BB19 | 47 |
| Dining car #501 WP | BB42 | 239 |
| Dining car #501-8 WP plan | BB42 | 239 |
| Dining car #506 WP | BB42 | 239 |
| Dining car #704 C&S BP | BB19 | 47 |
| Dining car #251204 (ex coach #7159) (1969) | BB35 | 197 |
| Dining car California WP | BB42 | 239 |
| Dining car California Zephyr proposed plans (1944) | BB42 | 149 |
| Dining car class DA-5 (#170-177) plan | BB42 | 234 |
| Dining car class DA-5 modifications | BB42 | 233 |
| Dining car class DA-6 (#178-187) plan | BB42 | 234 |
| Dining car class DA-7 (#190-192) plan | BB42 | 235 |
| Dining car classes | BB42 | 233 |
| Dining cars California Zephyr consist (Z Q&A 98-23, Z 39) | Z 39 | |
| Dining car FW&D lettering diagram | BB19 | 42 |
| Dining car (lightweight) stove fuel (Z Q&A 01-4, Z 44) | Z 44 | |
| Dining car Mount class D&RGW plan | BB42 | 238 |
| Dining car Mt Massive D&RGW kitchen interior views (c1945) | BB42 | 129 |
| Dining car Mt Princeton D&RGW interior views (c1945) | BB42 | 129 |
| Dining car Peak class D&RGW plan and internal views | BB42 | 237 |
| Dining car series #153-161 (DA-3) (8/37) | BB14 | 17 |
| Dining car service price list D&RGW (1939) | BB42 | 31 |
| Dining car/lounge Mt Massive D&RGW Expo Flyer Feather River Canyon | BB42 | 242 |
| Dining car/lounge Mt Yale D&RGW | BB42 | 238 |
| Dining-parlor car Exposition Flyer Burlington (c1941) | BB23 | 73 |
| Dining-parlor-obs #307/308 Omaha (4/66) | C 95 | 8 |
| Dinkies Great Western Sugar Co. steam locos | BB32 | 53-59 |
| Dinkies name (Z Q&A 94-13, Z 30) | Z 31 | |
| Dinkies suburban services - full article | BB 1 | 4 |
| Directors’ Tour Southern Illinois (5/64) | BB35 | 241 |
| Directors special train Chicago (1965) | BB17 | 1 |
| Disk brake tests California Zephyr simulation Somonauk (3/48) | BB42 | 195 |
| Dispatcher’s office Buda (c1950) | BB41 | 82 |
| Dispatcher’s office, Creston | BB22 | 22 |
| Dispatcher’s office, Creston (3/57) | BB11 | 31 |
| Dispatcher’s post Alliance (12/76) | BB37 | 16 |
| Dispatcher’s Record, Red Oak April 1949 | BB22 | 46 |
| Dispatcher’s Record, Creston April 1949 | BB22 | 26 |
| District sign | DS10 | 6 |
| Ditcher #01 B-RI American-type | BB19 | 49 |
| Ditcher #01 T&BV American-type (1910) | BB19 | 49 |
| Ditcher #99276 C&S (1941) | BB18 | 78 |
| Ditcher #A23 FW&D plans | BB18 | 78 |
| Ditcher, Erie and American types | BB18 | 76-8 |
| Ditmar bus Burlington Trailways | BB24 | 18 |
| DiTolla Produce Co. billboard reefer drawings | BB28 | 28 |
| Division Office buildings (Burlington Boxes) - full article | BB37 | 4 |
| Division sign | DS10 | 33 |
| Dixon, Ne. depot (c1929) | BB27 | 26 |
| DMX buses Burlington Trailways | BB24 | 18 |
| Do Not Stop On Tracks sign | DS10 | 98 |
| Doane, Thomas B&MR engineer | BB16 | 6 |
| Dome car #4709 Silver Castle conversion from chair car (Z Q&A 99-5, Z 40) | Z 41/42 | |
| Dome car history | BB42 | 151 |
| Dome cars – CB&Q built “patterns” (Z Q&A 91-11, Z 25) | Z 25 | |
| Dome cars (pattern) assignments (Z Q&A 98-19, Z 39) | Z 39 | |
| Dome car washer Denver (1947) | BB42 | 198 |
| Dome car washer Moffat Tunnel diagram (1948) | BB42 | 198 |
| Dome cars Expo Flyer adverts and schedules (1948) | BB42 | 200 |
| Dome cars – see individual cars or types | | |
| Dome coach Silver Dome - part history | Z 42 | 10 |
| Dome coach Silver Castle - part history | Z 42 | 10 |
| Donkey cart (c1895) | BB36 | 58 |
| Doodlebugs - see Motor cars | | |
| Dormitory #659 (ex Clover Veldt) Denver Zephyr shadow lined (12/62) | BB42 | 245 |
| Dormitory tavern California Zephyr proposed plans (1944) | BB42 | 147 |
| Dotsero Cutoff history | BB42 | 15 |
| Doubb, R., Oumwa Roadmaster (c1938) | BB39 | 29 |
| Double quadrant signals (N1481) at MP148 Savanna (1/62) | C 03 | 4+ |
| Double track end sign plan C&S (4/30) | DS 8 | 16 |
| Douglas Park suburban service (Z Q&A 93-2, Z 28) | Z 28 | |
| Downers Grove | BB 1 | 4 |
| Downers Grove (6/29) | C 90 | 12 |
| Downers Grove turntable (7/48) | BB 1 | 12 |
| Downers Grove wreck Twin Cities Zephyr (2nd) (4/47) | BB22 | 11 |
| Dragline crane #630 on flat car (c1965) | BB35 | 197 |
| Draperies for Zephyr Bassett, McNabb Co advert (4/34) | BB43 | 12 |
| Drawing room-parlor #4625/4628 Diana/Mercury CP | BB22 | 8 |
| DRI&NW brief history | BB37 | 58 |
| DRI&NW valuation section map (1918) | BB37 | 58 |
| Drinking cups for Zephyr United States Envelope Co. advert (4/34) | BB43 | 36 |
| Drovers and drovers’ cars - article | BB25 | 109 |
| Drovers car #5760 (9/48) | BB25 | 111 |
| Drovers car #5760 (6/63) | BB25 | 111+ |
| Drovers car #5760-5 (ex Pullman tourist cars) roster | BB25 | 111 |
| Drovers car 28 foot (waycar style) diagram (1910) | BB25 | 109 |
| Drover cars ex-Pullman (Z Q&A 90-5, Z 22) | Z 22 | |
| Drumhead sign Ak-Sar-Ben | BB42 | 248 |
| Drumhead sign Atlantic Coast Limited (c1911) | BB42 | 9 |
| Drumhead sign Expo Flyer | BB42 | 1 |
| Dry-Flo GATC covered hopper class HC-4/4A/4B | BB20 | 38-41 |
| DSLP bus with Silversides | BB24 | 38 |
| DSLP map and buses | BB24 | 31-3 |
| Dubuque & East Dubuque bus service | BB24 | 62 |
| Dubuque depot (c1948) | BB24 | 62 |
| Dubuque depot | Z 46 | 12 |
| Dubuque depot | Z 47 | 7 |
| Dubuque Depot (Z Q&A 03-1, Z 46) | Z 47 | |
| Dulux and Duco paint notes Data Sheet (4/58) | Z 54 | 16C |
| Dump car #9299 C&S Ingoldsby wood side BP & plan | BB32 | 61 |
| Dump car #9838 C&S Ingoldsby wood side (1908) | BB32 | 71 |
| Dump car #10094, 10127 C&S Ingoldsby all steel | BB32 | 62 |
| Dump car #10135 C&S Ingoldsby all-steel BP (1903) | BB32 | 62 |
| Dump car #26841 D&RG (Caswell design) | BB32 | 62 |
| Dump car #202729 20 yard Kilbourne & Jacobs Bonneville (9/23) | BB40 | 11 |
| Dump car #202755 20 yard Kilbourne & Jacobs Bonneville (9/23) | BB40 | 11 |
| Dump car air #202660 | BB18 | 76 |
| Dump car air #202728-9 (9/23) | BB18 | 75 |
| Dump car air #202755 (9/23) | BB18 | 75 |
| Dump cars concrete construction, Aurora (c1922) | BB46 | 24 |
| Dump cars four wheel (7/12) | BB18 | 74 |
| Dump cars narrow gauge Aurora elevation (1919) | BB46 | 11-13 |
| Dump trestle sugar beet | BB32 | 10 |
| Dustless Coal, Old Ben mine (8/29) | BB35 | 8/68 |
| Dynamometer #30 & 4 GP-30’s Creston (5/62) | C 91 | 10 |
| Dynamometer #30 (7/38) | BB24 | 75 |
| Dynamometer #30 Chinese red Denver (2/63) | BB24 | 78+ |
| Dynamometer #30 CP (1929) | BB24 | 75 |
| Dynamometer #30 floor plan | BB24 | 73 |
| Dynamometer #30 internal view | BB24 | 78 |
| Dynamometer #30 loaned to NYC (Z Q&A 98-5, Z 37) | Z 37 | |
| Dynamometer #30 Pullman green Eola (6/58) | BB24 | 78+ |
| Dynamometer #30 radio aerial & ice hatch (9/62) | BB24 | 78 |
| Dynamometer #30 Red Oak (1935) | BB24 | 76 |
| Dynamometer #30 testing 4 GP-30’s Creston (5/62) | BB24 | 79 |
| Dynamometer #30 testing FT #103 EMD demonstrator | BB24 | 77 |
| Dynamometer #30 testing GP-20 #5625 EMD | BB24 | 79 |
| Dynamometer #30 testing loco #203 D&SL Pinecliff | BB24 | 76 |
| Dynamometer #30 testing SD-45 #4353-4 EMD | BB24 | 80 |
| Dynamometer #90151 drawings (1902) | BB24 | 70 |
| Dynamometer #204725 as MoW waycar (c1933) | BB24 | 73 |
| Dynamometer #204725 drawings (1902) | BB24 | 70 |
| Dynamometer #204725 on C&S (1912) | BB24 | 71 |
| Dynamometer #204725 testing loco #640 C&S | BB24 | 71 |
| Dynamometer #204725 testing loco #802 C&S | BB24 | 71 |
| Dynamometer #204725 with roof housing (1912) | BB24 | 71 |
| Dynamometer #X50041 NYC&St.L BP (1924) | BB24 | 73 |
| Dynamometer #Z Aurora shops (1896) | BB24 | 68 |
| Dynamometer #Z internal/external views CP (8/00) | BB24 | 66-7 |
| Dynamometer - full article | BB24 | 66 |
| Dynamometer and recorder table drawings (1902) | BB24 | 69/72 |
| Dynamometer recording (1902) | BB24 | 72 |
| Dynamometer recording (1927) | BB24 | 74 |