Besides these unique American Memory materials , the Library Internet services 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 .
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 .