| Subject/Photo | Publication | Page |
| K-line name origin (Z Q&A 99-6, Z 40) | Z 41 | |
| Kable Brothers Co., Oregon, history | Z 47 | 6B |
| Kalamazoo buses Burlington Trailways | BB24 | 18 |
| Kansas City & Omaha part loco roster | BB44 | 97 |
| Kansas City track plan | Z 54 | 22 |
| Kansas City track plan (Z Q&A 07-01, Z 54) | Z 54 | |
| Kansas City Union Station (1967) | BB15 | 16 |
| Kansas City Union Station (2007) | Z 56 | 1/5+ |
| Kansas City Union Station post card view (c1945) | Z 56 | 5+ |
| Kansas City Zephyr mixed consist (1960) | BB15 | 10 |
| Kansas City Zephyr/Nebraska Zephyr (1964) | BB22 | 15 |
| Kansas City Zephyr picture 1952 CB&Q Annual Report cover | Z 54 | 13 |
| KC&O part loco roster | BB44 | 97 |
| Keep Off The Grass sign | DS10 | 59 |
| Keller mine, Sesser (later Old Ben No. 16) (c1908) | BB35 | 12 |
| Kedzie Avenue Tower (Z Q&A 93-2, Z 28) | Z 28 | |
| Keokuk Canning Co. billboard reefer drawings | BB28 | 24 |
| Keokuk Canning Co. pickle tank car #101 KKCX. | BB28 | 25 |
| Keokuk coaling facilities (Z Q&A 02-1, Z 45) | Z 45 | |
| Keokuk dam CB&Q postcard (c1917) | Z 57 | 24+ |
| Keokuk track scale house (c1985) | BB27 | 53 |
| Kewanee, Il. track plan (proposed) (9/19) | Z 55 | 16 |
| Killpatrick Collins coal mine, Cambria (c1899) | BB34 | 73 |
| Kinetic Chemicals Inc. Freon refrigerant for Zephyr advert (4/34) | BB43 | 39 |
| Kirgan & Co. billboard reefer drawings | BB28 | 59 |
| Kohrs Packing Co. billboard reefer drawings | BB28 | 52 |
| Krey Packing Co. billboard reefer drawings | BB28 | 56 |