This photograph of the grave of John Clipper, known as Jack, was taken by Martin Radigan. John Clipper was a freeman and stonecutter whose hand-carved, Seneca sandstone headstone is one of five remaining in the Seneca Quarry cemetery. He was born into slavery in 1840 in Hanover, Virginia and freed during the Civil War. He came to Maryland and worked at the Seneca quarry mill. He lived in a house near the C&O Canal with his wife and ten children.