Heavyweight Observation Passenger Cars
- (undecorated) (5)
- Atchison Topeka & Santa Fe (ATSF) (1)
- Baltimore & Ohio (B&O) (1)
- Burlington Northern Santa Fe (BNSF) (1)
- Great Northern (GN) (2)
- Milwaukee Road (MILW) (1)
- New York Central (NYC) (2)
- New York, New Haven & Hartford (NH) (1)
- New Zealand Railway (1)
- Pennsylvania Railroad (PRR) (1)
- Pullman (1)