Q. Historical advertisements: images

Library of Congress Prints & Photographs Reading Room: Scroll down to the bottom and you can find instructions on how to search the Library of Congress Prints & Photographs Online Catalog.

Ad*Access 
Images of advertisements printed in U.S. and Canadian newspapers and magazines from 1911-1955.

See also History Matters - Making sense of ads: Advertisements Online for a comprehensive list of sources for advertisements.

From WARC 's menu, select WARC Creative - Rankings > Campaign Library to search for ads by keyword, product category, location, and media type.