This image is in the public domain, as it was originally published before 1978 without a copyright notice in the 1961 Northwestern University yearbook, The Syllabus. No copyright notice appears within this publication. See also: [[:en:Wikipedia:Public domain#Published works|]].
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 (50 p.m.a.), Mainland China (50 p.m.a., not Hong Kong or Macao), Germany (70 p.m.a.), Mexico (100 p.m.a.), Switzerland (70 p.m.a.), and other countries with individual treaties.
{{Information |Description = Photograph of [[Willie the Wildcat]] at a Northwestern football game, c. 1961 |Source = 1962 The Syllabus (Northwestern University yearbook), page 278 |Date = c. 1961 |Author = photographer unk
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