William Still was an African-American abolitionist based in Philadelphia, Pennsylvania, who played a significant role in the abolitionist movement during the 19th century. He served as a conductor of the Underground Railroad and was responsible for aiding and assisting at least 649 enslaved people to freedom. Beyond his work on the Underground Railroad, Still was a businessman, writer, historian, and civil rights activist who contributed to the broader struggle for African-American freedom and equality. Before the American Civil War, Still held the position of chairman of the Vigilance Committee of the Pennsylvania Anti-Slavery Society, also known as the Vigilant Association of Philadelphia. In this role, he directly aided fugitive slaves seeking freedom. What distinguished Still's work was his commitment to record-keeping; he maintained detailed records of the people he helped, which served the important purpose of assisting families in reuniting after slavery's end. These records became a valuable historical resource documenting the experiences of those who sought freedom through the Underground Railroad. Still lived from 1821 to 1902, witnessing the end of slavery in America and the subsequent Reconstruction era. His legacy encompasses both his direct humanitarian work in helping enslaved people achieve freedom and his contributions as a historian and writer who preserved the stories and experiences of those who passed through Philadelphia on their journey to liberty.