There are two different strategies for working with newspapers:
Covers: 1800-1900.A fully-searchable, facsimile archive of hundreds of U.S. papers, including the Arkansas Gazette (1819-1898), Arkansas Democrat (1846-1899), the Arkansas State Gazette (1836-1865), and the Morning Republican (Little Rock, 1867-1875).
The Libraries offer many newspapers of historical and research on microfilm or microfiche.
Some noteworthy collections of newspapers on microfilm include: