Facts about the Printing Industry for Schools / compiled by John A. Backus and Milford M. Hamlin. Elizabeth, N.J. : Am. Type Founders, 1940., Box: 4. Arthur Ormsbee and the graphic and printing industry in Grand Rapids collection, Collection 296. Grand Rapids History Center. https://archive.grpl.org/repositories/4/archival_objects/32210 Accessed November 15, 2024.