Sometimes you can find some interesting snapshots of history hiding inside the covers we like to collect.
I found this four page 1927 'Chevrolet Service Bulletin' (actually an advertisement for 'Gene's Auto Place). Being an old car kind of guy, I found it interesting. I especially like the image of the 'auto rotisserie'. These are commonly seen today in restoration shops after the car body is removed from the chassis for body and paint work. Finding the center of gravity of a auto body shell is one thing, I cannot imagine trying to find the center of gravity of a fully functional automobile.