Cohasco, Inc., specializes in books, historical documents, antiquarian materials, and related collectibles. Included are autographs, documents, manuscripts, maps, newspapers, prints, paper ephemera, and other items. The firm was established in 1946 and was one of the earlier sellers specializing in autographs. Today, Cohasco sells works on paper both via auction and as an online bookseller. Cohasco is located in Yonkers, New York, but conducts its auctions via phone, fax, mail and email.