This file is from Wikimedia Commons and may be used by other projects.
The description on its file description page there is shown below.
Summary
DescriptionRooney-Art-1934.jpg
English: Arthur Rooney, owner of the Pittsburgh Pirates/Steelers of the National Football League, 1934
Date
Source
The National Football League: Professional Football Rules, Official 1935 Guide. Spalding's Athletic Library. New York: American Sports Publishing Co., 1935; p. 36.
Note that it may still be copyrighted in jurisdictions that do not apply the rule of the shorter term for US works (depending on the date of the author's death), such as Canada (70 years p.m.a.), Mainland China (50 years p.m.a., not Hong Kong or Macao), Germany (70 years p.m.a.), Mexico (100 years p.m.a.), Switzerland (70 years p.m.a.), and other countries with individual treaties.
Uploaded a work by Unknown from ''The National Football League: Professional Football Rules, Official 1935 Guide.'' Spalding's Athletic Library. New York: American Sports Publishing Co., 1935; p. 36. with UploadWizard