Library of Congress. Copyright Office
Books
Catalog of Copyright Entries. Third Series
1967
Books and Pamphlets, Including Serials and Contributions to Periodicals
1964
Catalog of Copyright Entries. Fourth Series
1966
Catalogue of Title-entries of Books and Other Articles Entered in the Office of the Librarian of Congress, at Washington, Under the Copyright Law ... Wherein the Copyright Has Been Completed by the Deposit of Two Copies in the Office
1968