Schwinn Dealer Manuals

Hello to all, years ago I acquired some older Schwinn dealer books and I'm curious as to what they may be worth. There are seven books total, five from 1967, I think, and two from 1971. The older books are all three ring binder types and are labeled as "Bicycles", "Sales", "Parts", " Service Volume 1", and "Service Volume 2". The newer books have a regular book type binding and are Service Volumes 1 & 2. They look like encyclopedias or something. The only thing I've seen similar are the pages listed for sell in this thread.

Any info that the CABE can provide is appreciated.

The Schwinn Service manuals (vol. 1 and 2) normally sell for $30 to $100 or so on eBay, a clean set recently sold for $31: http://www.ebay.com/itm/121506407080

Parts books also sell for about the same price range: http://www.ebay.com/itm/191440827905

Thanks for the info.