Early American Newspapers, Series 1 (a part of the Readex America's Historical Newspapers database) offers more than 700 historical American newspapers from 23 states and the District of Columbia printed between 1690 and 1876. Focusing largely on the 18th century, Series 1 is based on Clarence S. Brigham's "History and Bibliography of American Newspapers, 1690-1820" and other authoritative bibliographies.
Series 2 complements Series 1by offering more than 200 significant 18th and 19th-century newspapers. The bulk of Series 2 focuses on the period between 1820 and 1860, when the number of American newspapers rose dramatically. Based primarily on the newspaper collection of the American Antiquarian Society, Series 2 also includes titles from the holdings of the Library of Congress, the Wisconsin Historical Society and other organizations.
The core of the collection is formed by American Antiquarian Society (AAS) founder Isaiah Thomas' own collection of colonial and early national period newspapers and supplemented by issues added by Thomas' successors at the AAS.