Hopkins, Leroy, "Bethel African American Methodist Church in Lancaster: Prolegomenon to Social History". Journal of the Lancaster County Historical Society. Volume 90. Number 4, 1986.
Hopkins, Leroy, "The Negro Entry Book: A Document of Lancaster Cityís Antebellum Afro-American Community." Journal of the Lancaster County Historical Society. Volume 88. Number 4, 1984.
Hopkins, Leroy, "Black Eldorado on the Susquehanna: The Emergence of Black Columbia, 1726-1861. Journal of the Lancaster County Historical Society. Volume 89. Number 4, 1985.
Shirk, Willis L. "Testing the Limits of Tolerance: Blacks and the Social Order in Columbia, Pennsylvania, 1800-1851. Pennsylvania History, Volume 60, Number 1. January 19993.
Columbia Home / AME Church / Colonization / Race Violence / Population