What do you think about Wheel Stops? Is a model necessary? Are there pictures of it from the 60s?
I think about a new small project for the industrial spur. My favorites are Type SF and Type SH.
http://www.westernsafety.com/products/w ... chpg7.html
I found a patent for a similar one to the Type SF from 1944.
http://www.google.com/patents/US2441148