AfriGeneas Free Persons of Color Forum
Ohio-Federal Census Abstracts
FYI, if you are researching FPOC's in Ohio then the County Chapters of the Ohio Genealoical Society (OGS) may have abstracts for your particular county of interest for each Census year from 1820 thru 1860 in a 'soft cover' booklet.
For example, the 1850 Federal Census of Mercer County, Ohio booklet is in this format. It also contains Mercer County Indexes for 1820, 1830 & 1840 showing Head of Households which name the 'Free Colored' found in Mercer County for those years. These county booklets are much easier to search than microfilm, as most are indexed.
Check the site shown below for OGS 'holdings' and also a listing of addresses for their County Chapters.