American national biography online
America's historical newspapers (1690-1999)
Burlington free press archive (1848-2007)
Burlington free press (ProQuest)
Chronicling America: historic American newspapers (1789-1924)
Early American imprints, series I (1639-1800)
Early American imprints, series Il (1801-1819
New York times (Proquest historical newspapers, 1851-2013)
Online Research Center, Vermont Division for Historic Preservation
Oxford companion to United States history