ASD's founders preserved letters, teaching aids, illustrations, books, and other objects. These items now form a rich collection that has become a credible base for research among graduates, historians, genealogists, authors, editors, and scholars. This carefully organized collection includes the histories of deaf education, religion, Hartford, and the United States. It links ASD's heritage and regional impact with its contributions to the Deaf Community as a whole. Among the thousands of items in ASD's collection.