World famous midtown Manhattan bookstore, Gotham Book Mart, a "New York literary haven of international stature" operated from 1920 to 2007. 

Experts valued the collection at several million dollars and most of the store's inventory was sold at auction for $400,000 in 2007. 

200,000 items from Gotham Book Mart were donated to the University of Pennsylvania in 2007 to Penn’s Rare Book and Manuscript Library, known for its collection of antiquarian...