Excellent thread. Great modeling and I love the vintage truck pics. (What can I say? I like old trucks!)
My next layout (HO) is going to be set in the early 60s, so much of this information is relevant.
Oh... and here's a pic of an '83 Freightshaker I owned for a spell a few years ago. In this pic its earning a living helping a friend haul his track hoe to a job site. (I told 'ya I like old trucks!)