File:Millenium73 poster.jpg

Summary
This was one of the posters advertising Millennium '73, the topic of the article where it is used.

Fair use rationale in the article Millennium '73

 * 1) It's a low resolution copy of an event poster.
 * 2) It doesn't limit the copyright owner's rights to attract people to the free event, which occurred 35 years ago.
 * 3) Because of the low resolution, copies could not be used to make illegal copies of the artwork/image.
 * 4) The image is itself a subject of discussion in the article or used in the infobox thereof.
 * 5) The image  is significant because it was used to promoted a notable event.