The College Art Association has a series of guidelines (based on the Chicago Manual of Style) for image captions.
When you're writing about an image or multimedia piece in a paper or presentation, you should provide the following pieces of information in the caption and in the bibliography...if you have a list of works of art cited:
If you're just referring to the piece in your paper, use
the first time you mention it, and just the creator and title thereafter.
Chicago Manual of Style Citation Style
The Quick Guide answers some of the most frequently-asked questions about the Chicago citation style.
The Chicago Manual of Style (16th ed.)
Olin Library Ref Z253 .M69 2010 (located at the Olin Reference Desk)
The Purdue Online Writing Lab gives excellent examples (for footnotes/endnotes and bibliographies) on how to cite using the Chicago citation style: books, periodicals, web sources, film & television, and much more.
See especially, Chicago Manual of Style's "Section 14.274-14.280, Citing Audiovisual Materials," which includes online multimedia.
Try formulating a Chicago-style citation for ....
|Image: David Falconer. "When the Major Home Oil Dealer Ran Out of Fuel a Special Board Was Activated..." 1973. U.S. National Archives on Flickr Commons.|
You'll find many references in the course of your research. Make sure you keep track of what you find! The library offers some great tools to help, such as Zotero.
Both Mann Library and Olin & Uris Libraries offer workshops in using Zotero.