The story of inland transport in America will be shown in all detail & profuseness in the Centenary Exhibition and Pageant of the Baltimore & Ohio Railroad to be held in Baltimore September 24th to October 8th 1927…, 1927

The earliest posters in the collection feature Leonora Jackson, one of the first female violinists to gain international fame, circa 1900-1915. The most recent poster is a 2020 Black Lives Matter poster. In between is everything from a 1968 Nixon/Agnew campaign poster, to Baltimore City Fair posters from the 1970s, to a poster from the U.S. Pro Cycle Championship held in Baltimore in 1982.

The bulk of the posters in the collection, over 1,000, are World War I and World War II era propaganda posters. Most were produced by the U.S. Government; the collection also consists of privately printed posters, both from the United States and abroad.