Art Ref & Neilson Ref N7525 .I558
Illustration Index. 2nd-8th eds. New York: Scarecrow Press, 1957-1998.
Indexes to specific images in well-illustrated popular periodicals like American Heritage, Smithsonian, National Geographic, and other titles listed on this page.
Publications Index. National Geographic Society.
Annotated subject index to articles in National Geographic Magazine (1888-date) and other publications of the NGS. Descriptions include information about photos and other illustrations.