The Learning Curve, 10/23/24 Source: Pioneer Institute “U-TX at SA’s Catherine Clinton on Harriet Tubman & the Underground Railroad.” (10/23/24) https://pioneerinstitute.org/featured/u-tx-at-sas-catherine-clinton-on-harriet-tubman-the-underground-railroad/ October 24, 2024October 23, 2024 Thomas L. Knapp