William Laurence Ledwith served as the librarian of the Presbyterian Historical Society.
William Laurence Ledwith is buried at West Laurel Hill Cemetery, Bala Cynwyd, Pennsylvania.
The Hymnal (1896)
The Life of Dr. McCosh (1896)
Six Letters of President Burr (1902)
The Record of Fifty Years, 1852-1902: Historical Sketch of the Presbyterian Historical Society (1902)
William Laurence Ledwith, D.D. (1904)
William Laurence Ledwith: 1850-1904 (1904)