Billington has championed the Library’s American Memory National Digital Library (NDL) Program, which makes freely available on-line over 24 million American historical items from the collections of the Library and other research institutions. These unique American Memory materials and the Library’s other Internet services, which include the congressional database, THOMAS, the on-line card catalog, exhibitions, information from the U.S. Copyright Office and a web site for children and families called America’s Library, handled more than 2.6 billion transactions last year.