File:Christiansen-Jack-1961.jpg

Jack Christiansen (1928–1986), assistant coach for the San Francisco 49ers of the National Football League (NFL), 1961.

Photographer uncredited.

Published as Dan McGuire (ed.), The San Francisco 49ers of the National Football League Present the Shotgun Offense: Press, Radio, Television Information for 1961. San Francisco, CA: San Francisco 49ers Football Club, 1961; p. 11.

No copyright notice in publication.

Published in the USA between 1929 and 1977 (inclusive) with no copyright notice in first publication, public domain.

Scanned and digitally edited from a copy in his collection by Tim Davenport ("Carrite") for Wikipedia. No copyright claimed for the work, file released to the public domain without restriction.

This work is in the public domain because it was published in the United States between 1929 and 1977 inclusive, without a copyright notice. Unless the author has been dead for several years, it is not in the public domain in countries that do not apply the rule of the shorter term for US works. This includes Canada, China (not Hong Kong, Macao, or Taiwan Area), Germany, Mexico, Switzerland, and other countries with individual treaties. See also further explanation. PD-US Public domain in the United States //wiki.riteme.site/wiki/File:Christiansen-Jack-1961.jpg

The uploader or another editor requests that a local copy of this file be kept. This image or media file may be available on the Wikimedia Commons as File:Christiansen-Jack-1961.jpg. While the license of this file may be compliant with the Wikimedia Commons, an editor has requested that the local copy be kept too. This file does not meet CSD F8 and should not be tagged as a Commons duplicate. If you desire to nominate it for deletion, notify the tagging editor.