Early American Newspapers, Series II, 1758-1922"Based primarily on the holdings of the American Antiquarian Society (AAS), which houses a vast collection of American newspapers through 1876, Series 2 also includes titles from the newspaper collections of the Library of Congress, Wisconsin Historical Society and more than 90 other institutions. It contains several hundred thousand fully searchable issues from more than 290 significant 18th- and 19th-century newspapers."