Possible Clues:

• Abolitionist Harriet
• Underground Railroad leader
• Abolitionist slated to replace Jackson on the $20 bill
• Proposed portrait for the $20 bill
• Underground Railroad icon Harriet
• Harriet __, former slave who helped create the Underground Railroad
• Proposed replacement for Jackson on the twenty
• Underground Railroad conductor dubbed 'Moses'
• Formerly presiding Liberian bath attendant?
• Ranting preacher, in old lingo