Modeling period automobiles and trucks can be made easier by using resources on the Internet.

One that I like and use a lot is the Brochures section of The Old Car Manual Project (http://www.oldcarbrochures.com/index.html). Here one can find original documentation of cars and trucks by make & year. The amount of info available is very impressive, but there are still some missing pieces.

Besides brochures, sometimes there are other sales documents and technical specifications booklets.

Searching on the internet can also turn up the original factory paint colors used. Since classic automobile and truck restoration is a popular hobby, this information is usually fairly easy to find.

And there are many forums for classic automobiles and trucks if a specific question needs an answer.