The association between Lewis M. Terman and the World Book Company is traced in order to gain insight about the role of test publishing in the testing movement. The test publisher assumes the position of an intermediary between the test developer and the educational administrator responsible for making decisions about test adoption. Terman began his association with World Book shortly after World War I. He had a major influence in directing the company to publish group ability and achievement tests, including the Otis Group Intelligence Scale, the Haggerty "Delta" series, the Terman Group Test of Mental Ability, the National Intelligence Tests, and the Stanford Achievement Tests--the first published achievement test battery. Prior to Terman's association with World Book, Houghton Mifflin published his Stanford Binet Intelligence Scale. He also served as an editor of a monograph series aimed at educating teachers and school administrators on the benefits of testing. Terman's association with World Book reflected his role as an advocate and defender of psychological testing. The company, itself, played an influential role in the educational testing movement. A list of 53 footnotes is appended. (Author/GDC)