"The Keystone Works of Henry Disston are the largest in the
The founder of the great establishment known as the Keystone
Saw Works, and owned by the firm of Henry Disston & Sons, was Henry
Disston, who was born in Tewkesbury, England, May 24, 1819, and came
to this country, in company with his father and sister, when he was
fourteen years of age."
History of Philadelphia,
J. Thomas Scharf and Thompson Westcott,