The New world encyclopedia;
a library of reference,
superbly and profusely illustrated with hundreds of subjects in full color,
Hagar, G. Jotham. (1919). The New world encyclopedia: a library of reference. New York: The Christian herald.
Hagar, George Jotham, 1847-. The New World Encyclopedia: a Library of Reference. New York: The Christian herald, 1919.
Warning: These citations may not always be complete (especially for serials).