The Allentown Philatelic Society has a collection of resources available for use.
Club members may borrow items by contacting the Club Librarian via internally shared contact details or at a monthly meeting. Requested item(s) will then be brought to the next club meeting – or picked up by special arrangement. If desired, an item may remain borrowed until another member requests it.
Listed below are resources available to our members

Stamp Auction Forms: Bidding Sales Sheet Seller Lot List

The video below is about the history of stamp doctoring, and is posted here with permission from the American Philatelic Society. It is intended for viewing on this website only.

The Doctoring of Stamps – Provided by the American Philatelic Society