Library of Congress. Copyright Office
Copyright Basics
Copyright Law of the United States of America
Contained in Title 17 of the United States Code
Copyright Law of the United States of America and Related Laws Contained in Title 17 of the United States Code, Circular 92
Copyright Renewals 1953
Copyright Renewals 1954
Copyright Renewals 1957
Copyright Renewals 1959
Copyright Renewals 1978
Copyright Renewals: Periodicals: 1951
Motion pictures and filmstrips, 1970
Motion pictures and filmstrips, 1971
Motion pictures and filmstrips, 1972