Authors: PHMC Division of History in cooperation with the Pennsylvania Historical Association and independent contractors. Marker essay contributions by Marie Denlinger, Dennis Downey, and William Pencak.
Captions: Martha Hall and PHMC Division of History
and Charlie Hardy with the assistance of Marie Brown Wilson
Digital Rights and Image Research: Martha Hall with the assistance of Amy Brigham
and Marie Brown Wilson with the assistance of Charlie Hardy
Digital Content Ingestion: Matrix
Related Attractions: PHMC Division of History
Video: WITF, Inc.
Audio: WHYY, Inc. and WITF, Inc.
Interactive: WITF, Inc.
How Far to Freedom?, by Harriet Douple
There Were Many Paths to Freedom by Don Roberts
150 Years of Abolition in Pennsylvania, by James Kearney
Blockson Afro-American Collection, Temple University
Brooklyn Museum of Art
Chester County Historical Society
Cincinnati Art Museum
City of Philadelphia Mural Arts Program
Cultural Center, Wilberforce, Ohio
Historical Society of Dauphin County
Delaware Art Museum
Friends Historical Society of Swarthmore College
Harper's Ferry NHP
Historical Society of Pennsylvania
Lancaster County Historical Society
Library Company of Philadelphia
National Afro-American Museum and
National Portrait Gallery
Schomberg Center for Research in Black Culture.
Washington County Historical Society
York County Heritage Trust