^Comics Buyer's Guide #1636 (December 2007), p. 135. نيويورك تايمز (below) also gives 1915, although the Lambiek Comiclopedia (above) lists 1919.
^"United States Social Security Death Index," index, FamilySearch (https://familysearch.org/pal:/MM9.1.1/JBWR-2WB : accessed 25 Feb 2013), Gilbert T Fox, 15 May 2004; citing U.S. Social Security Administration, Death Master File, database (Alexandria, Virginia: National Technical Information Service, ongoing). نسخة محفوظة 4 مارس 2016 على موقع واي باك مشين.