In a letter to Marvin Sackner, Depew explained that he counts each sheet as two pages even if the sides are blank. Although most pages have been photocopied from rubberstampings, at least four pages are original rubberstamped pages as judged by comparisons between different copies. -- Source of annotation: Marvin or Ruth Sackner. https://aspace.lib.uiowa.edu/repositories/5/archival_objects/893250 Accessed February 12, 2025.