From Slavery to Salvation; the autobiography of Rev Thomas W. Henry of the AME Church

      
                           transcribed, and with an historical essay by Jean Libby

first published in 1994          reprint 2005       primary source of enslaved ironworkers in western Maryland
In 1859, Rev. Thomas W. Henry was suspected of
being in conspiracy with John Brown.  The essay
by Jean Libby develops the circumstances as told
by the minister and documentary evidence.  The
issue was found by historian Benjamin Quarles and
published in
Allies for Freedom; Blacks and John
Brown
in 1974.