Michael Lesk has made the US copyright renewal registry (1923-1963) searchable. This is a big help in identifying book titles which may be out of copyright even though they were published between 1923 & 1964.
Michael Lesk has made the US copyright renewal registry (1923-1963) searchable. This is a big help in identifying book titles which may be out of copyright even though they were published between 1923 & 1964.