Stanford Copyright Renewal Database data source

Downloadable dataset of 250,000 records on U.S. copyright renewal for books published between 1950 and 1995.

Released in 2008 and funded by Hewlett Foundation. From front page: > … This database makes searchable the copyright renewal records received by the US Copyright Office between 1950 and 1992 for books published in the US between 1923 and 1963. Note that the database includes ONLY US Class A (book) renewals. > > The period from 1923-1963 is of special interest for US ...