Series consists of material accumulated by William J. Hopp in his role as a baker and plant supervisor at the Dare Company.
Includes material relating to correspondence courses, conferences, and research activities of the Independent Biscuit Manufacturers' Company of Chicago; recipe books containing cookie and cracker formulae used at Dare and possibly other companies (Perrin's Forest City Confectionery and Biscuit Works in London Ontario, Paulin-Chambers Company in Winnipeg, Manitoba); and material relating to the ingredients and manufacture of cookies and crackers.
Includes lessons and manuals, bulletins, correspondence, recipe books, research reports, article reprints, conference programs, catalogues and brochures, and other material.