John Langdon Sibley (29 December 1804-9 December 1885) was the librarian of Harvard University from 1856 to 1877.[1]
Sibley was the son of Dr. Jonathan Sibley and his wife, née Persis Morse.[2] He received his undergraduate education from Harvard and then studied at Harvard Divinity School. From 1829-1833 he was a pastor in Stow, Massachusetts. He then went to Cambridge, Massachusetts where he worked as a magazine editor. When Gore Hall was opened in 1841 he was appointed the assistant librarian under Thaddeus William Harris. In 1856 when Harris died Sibley became the librarian of Harvard.
On 30 May 1866 Sibley married Charlotte Augusta Langdon Cook, at Sommerville, Massachusetts. [2]
Sibley oversaw both the physical and fiscal expansion of the Harvard Library.
He also compiled the initial volumes of Sibley's Harvard Graduates (covering the Classes of 1642 to 1679) and bequeathed funds to the Massachusetts Historical Society to continue this project. Clifford K. Shipton published 14 more volumes (Classes of 1690 to 1771) and in 1999 an 18th volume appeared (1772 to 1774).