In 2008, the University of Pennsylvania received as a gift the contents of the Gotham Book Mart, the legendary New York City bookstore founded by Frances Steloff in 1920. For decades the Gotham Book Mart was, as Steloff prosaically put it, "the headquarters of the avant-garde." To mark the 100th anniversary of the store's founding, this exhibition catalogue explores the shop's role in assembling, publishing, and promoting groundbreaking experimental writers as well as its later years under the ownership of Steloff's hand-chosen successor, Andreas Brown.