While "surfing" I came across this site, not sure if the URL has been previously posted. Found a link to "old" newspapers and search instructions to find AA's as (colored).

A few interesting articles 1)///Emigration.....North Carolina, Goldsboro to Greencastle & Terre Haute, Indiana......200 Negroes (colored)1880.
2) Marriage...Randolph Gee (white) to Louisa Fishback (colored) 1886
3) Marriage...George H. Pauline (colored) to Arminta Martin (white) 1871.

The emigration article was of interest as some my folks migrated from NC to IN, Greencastle in particular, in 1880.

The site has links to Indiana resources (city & county) in addition to National links.

http://www.statelib.lib.in.us/www/isl/siteindex/index.html

Art Thomas