Celebrating Rights And Responsibilities - The Story of the 15th Amendment in Maryland: http://www.msa.md.gov/dtroy/project/story.html

The 15th Amendment to the Constitution: http://www.loc.gov/rr/program/bib/ourdocs/15thamendment.html

Black Americans In Congress - The 15th Amendment in Flesh & Blood: http://baic.house.gov/historical-essays/essay.html?intID=3

Slavery & Emancipation - 15th Amendment "The Right To Vote": http://civilwar.bluegrass.net/SlaveryAndEmancipation/15thamendment.html