Lightweight Railway Post Office Passenger Cars
- (undecorated) (7)
- Atchison Topeka & Santa Fe (ATSF) (5)
- Atlantic Coast Line (ACL) (2)
- Baltimore & Ohio (B&O) (1)
- Central of Georgia (CG) (2)
- Chicago, Burlington & Quincy (CBQ) (1)
- Delaware & Hudson (DH) (1)
- Denver & Rio Grande Western (D&RGW) (1)
- Erie Railroad (ERIE) (1)
- Great Northern (GN) (1)
- Illinois Central (IC) (1)
- Milwaukee Road (MILW) (2)
- Missouri Pacific (MP) (1)
- New York Central (NYC) (6)
- New York, New Haven & Hartford (NH) (1)
- Pennsylvania Railroad (PRR) (1)
- Rock Island (RI/ROCK/CRIP) (1)
- Southern Pacific (SP) (2)
- Southern Railway (SOU) (2)
- Union Pacific (UP) (1)