there are actually a few pre- 1955 busses for sale around AZ, here is another
1955 Chevrolet school bus
1941 International school bus
One is a 55' Chevy. There is a 1941 International for sale as well but it is super rough, rusty and missing all glass. Found a sweet 1948 Flexble older conversion too.
I don't mean to clog up the board with a bunch of for sale buses but these are all really cool old school buses (ok, one is a transit) that I thought you would all like to dream about...