Library of Congress - Digital Collections - Printed Ephemera
Three Centuries of Broadsides and Other Printed Ephemera
"The collection contains, among other materials, posters, playbills, songsheets, notices, invitations, proclamations, petitions, timetables, leaflets, propaganda, manifestos, ballots, tickets, menus, and business cards. There are more than 28,000 items in the collection with 10,172 available online. The material dates from the seventeenth century to the present day and covers innumerable topics."