Is the dome car the one which has a partial dome? The car I'm thinking of had limited seating under the dome section and the seats under the dome were rarely vacant.
Betty - I think they look like this:
DOME CAR
There were several designs for domes in the pre-Amtrak days.
The one pictured is like the one still around on Amtrak. Known back then variuusly as great domes, Big domes, etc.
However---most domes were the partial camel hump type, with 24 seats on top of a coach. In that arrangement the restrooms and other storage stuff was under the dome. Restrooms were sometimes quite large back then. They sometimes included a lounge area, smoking area.Which is getting away from the subject.
There were a few camel hump dome diners, with food service both upstairs and down. There were lounge cars with normal 24 seats in the the dome. There were also lounge cars of the short model with lounge area upstaris as well as down stairs..
The pre-Amtrak California Zephyr is noted to be the first dome train. About half of its cars were domes, The Union Paciific, in turn, produced some of the most beautiful, esp. their dome lounges and dome diners for the City of Los Angeles and the City of Portland , a few years after the CZ.
The Empire Builder, from which Amtrak got its present big dome, also had regular 24 seat camel hump coach domes on it as well as the huge lounge dome.
The Super Chief, forerunner to the Southwest Chief, had a "pleasure dome car" with a camel hump lounge at the top and lounge space and a private dining room below. The dining rooon, know as the Turquoise Room, was directly benath the dome. It could be rented to private parties.
Rumor has it that Richard Burton and Elizabeth Taylor one time took it over after leavng LA and got rip-roaringly drunk and stayed that way all the way to Chicago, not letting anybody else in.