Pauline Copes-Johnson (Video still via theGrio.com)

Tubman relative's black history lesson

theGRIO Q&A - Pauline Copes-Johnson,85, is the great-grandniece, and her daughter Deirdre Stanford, 64, is the great-great grandniece of Harriet Tubman has been giving presentations about Harriet Tubman's life for over ten years...