Chronicling America (National Level)
Chronicling America is a collection of over 600 newspapers from 30 states published between the 1830s and 1922, and it continues to grow rapidly. Backed by the Library of Congress and the National Endowment for the Humanities, these newspapers are all freely available. Although each state on the Historical Newspapers by State page indicates if Chronicling America includes newspapers from it, this site also allows you to search all Chronicling America newspapers simultaneously.
This also includes the Maryville Republican (an African-American newspaper; 1867-1877); the Clarksville Chronicle (Oct. 30, 1857 - Sept. 08, 1865;
Jan. 03, 1868 - Dec. 21, 1872) and the Clarksville Weekly Chronicle (July 06, 1855 - July 06, 1855; Sept. 15, 1865 - July 12, 1867).