Hello Everybody.
I'm on spring break right now, but I am going to do a history project when I get back.
No racism intended, but in the 1940s, 1950s, and 1960s, were streamlined express trains segregated?

By streamlined express trains, I'm talking about:
Empire Builder
City of San Francisco Express
California Zephyr
Super Chief
El Captian
North Coast Limited
Sunset Limited
Shasta Daylight
Coast Daylight
Capitol Limited
Broadway Limited
Colonial Express (PRR-not-Amtrak)
San Diegan
George Washington Express

Were these express trains segregated? I've googled and I only found some unnamed passenger trains that were segregated.
Were named express trains segregated?