Details on publications available here: http://www.accessible-archives.com/collections/african-american-newspapers/

Available here: Series 1: 1690-1876 and Series 3: 1829-1922.

From the Center for Research Libraries. Full description here. Highlights:
  –  89 journals published between 1740 and 1800
  –  Many titles from the first half of the 19th century (including more than 20 women's magazines)
  –  118 periodicals published during the Civil War (1861-1865) and Reconstruction (1865-1877) eras
  –  Trade magazines from the 19th and early 20th centuries

The Library at the University of Illinois at Urbana-Champagne has created a list of titles and years covered.

This electronic index provides access to its wealth of information. Memorial Library has the journal on microfilm. Consult the description of the journal in American Periodicals 1741-1900: An Index to the Microfilm Collections to link the index entries to specific microfilm reels.