The publication began in 1911 by W. E. Richardson of Chicago. It was edited by Henry Woldmar Ruoff who also edited the New Century Book of Facts and the Standard Dictionary of Facts and others. New editions were published in 1912 and 1913, the latter under the imprint of R. P. Trosper.S. Padraig Walsh Anglo-American General Encyclopedias 1704-1967 New York: R. R. Baker and Company, 1968 pp.175-6 Beginning with the 1917 edition it was published by the Education Associates, Inc. and remained with that company until 1963 when the encyclopedia was purchased by Cowles Communications Inc.Walsh p.176; Volume library : a modern authoritative reference for home and school use Nashville, Tenn. : Southwestern 2004 inside flap
