File:Flyer for Black Academy of Music concert at McChord Air Force Base, 1974 (52717036082).jpg

Flyer for Black Academy of Music concert at McChord Air Force Base, 1974 This image comes from the Seattle Municipal Archives, via Flickr.

Seattle Municipal Archives
	Native name	Seattle Municipal Archives
	Location	Seattle
	Coordinates	47° 36′ 18.22″ N, 122° 19′ 47.35″ W
	Website	http://www.seattle.gov/cityarchives/
	Authority file	: Q19979269 VIAF: 145531848 ISNI: 0000000098215747 LCCN: n88276554 WorldCat

It is not clear that the Seattle Municipal Archives office was in a legitimate position to grant the CC-BY-2.0 license they indicate on their Flickr account, mainly because it is not clear that this poster was ever copyrighted. In the U.S. at that time, that would have required a copyright notice; flyers/posters like this are normally only printed on one side, and there is no copyright notice here, so most likely:

This work is in the public domain in the United States because it was published in the United States between 1929 and 1977, inclusive, without a copyright notice. For further explanation, see Commons:Hirtle chart as well as a detailed definition of "publication" for public art. 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. العربية ∙ беларуская (тарашкевіца) ∙ čeština ∙ Deutsch ∙ Ελληνικά ∙ English ∙ español ∙ français ∙ Bahasa Indonesia ∙ italiano ∙ 日本語 ∙ 한국어 ∙ македонски ∙ Nederlands ∙ português ∙ русский ∙ sicilianu ∙ slovenščina ∙ ไทย ∙ Tiếng Việt ∙ 中文（简体） ∙ 中文（繁體） ∙ +/−