Simkin, William E. 1907-1992 Simkin, William E. (William Edward) Simkin, William Edward 17059 2024-08-07 17:26:41 2022-02-14 11:59:44 naf wikidata author https://fraser.stlouisfed.org/author/william-e-simkin-1907-1992 https://fraser.stlouisfed.org/api/author/17059