Vintage GM Pamphlet "The Open Mind" 1929-1930 GM Proving Ground Brochure

Description

Removed from a now closed GM dealers service department.
Pictures are actual, I'm selling what is pictured, quantity, condition, packaging, etc.
If you're unsure about anything, please ask, I'm selling to sell, and I'm not accepting returns. In the same breath, I really don't want to sell you something you can't use or don't want... so if there is a question, assume nothing and please ask!
Sold as is where is, not accepting for return.