E.E. Purinton - Foundation Course in Personal Efficiency (lesson 7); National Prosperity Survey , undated

E.E. Purinton - Foundation Course in Personal Efficiency (lesson 7); National Prosperity Survey , undated, Box: 18, Folder: 90. Purinton Family Papers, A&M 1964. West Virginia and Regional History Center. https://archives.lib.wvu.edu/repositories/2/archival_objects/194161 Accessed January 17, 2026.