Hired as a clerk by the society, this was the beginning of Still's career as an abolitionist and Underground Railroad operator. Over a period of fourteen years with the society, with varying official roles, Still encountered many of the fugitive slaves who passed through Philadelphia, and kept records of their experiences. (By James Chapnick)

After becoming president of Drew Theological Seminary in 1867, McClintock resides in Madison, New Jersey until his death on March 4, 1870. (By Blake Dickinson)