Jesse6669, Thank You for your Help I will look into that.
Ed, Thank You for Your help. The Plants I am looking for in the 1970's are the GM Fleetwood Cadillac Plant in Detroit, Michigan and the Toledo Jeep Plant. Both Plants were built using Brick and concrete with a lot of Glass. Presently only the conveyor portion of the Detroit Plat is still standing along Ford Street and the Toledo Jeep plant is also gone with only one of the smoke stacks still standing.
I am trying to model an old automobile assembly plant the used a lot of brick, concrete supporting structure and glass.