Tracking Down the Source of Newspaper clippings

This article from abundantgenealogy.com offers tips on identifying the source of clipping, obituaries, etc that don't include the name of the publication or the date. Source: ResearchBuzz

New York Slavery Index & Fold3 Black History records

The John Jay College of Criminal Justice at City University of New York has compiled an index of slavery records for New York that covers the period 1525 through the Civil War. The number of records is at 35,000 and growing, and includes much data of interests to genealogists....In recognition of Black History month, Fold3 is making all the records in its Black History Collection available for free for the entire month of February.
Source: ResearchBuzz