To celebrate America’s Independence Day, my friend Richard sent me a link to the Library of Congress’ online image repository, Three Centuries of Broadsides and Other Printed Ephemera. The intro to the site says
The Printed Ephemera collection at the Library of Congress is a rich repository of Americana. In total, the collection comprises 28,000 primary-source items dating from the seventeenth century to the present and encompasses key events and eras in American history. An American Time Capsule, the online presentation of the Printed Ephemera collection, comprises 17,000 of the 28,000 physical items. . . While the broadside format represents the bulk of the collection, there are a significant number of leaflets and some pamphlets. Rich in variety, the collection includes proclamations, advertisements, blank forms, programs, election tickets, catalogs, clippings, timetables, and menus.
I found the best way to start looking at the collection is by genre. The breadth of subject matter is really wide — from poetry to advertisements to reward posters like the one to the left.