Shipton, Clifford K.2020-07-291955Shipton, Clifford K. 1955. John Langdon Sibley, librarian. Harvard Library Bulletin IX (2), Spring 1955: 236-261.0017-8136https://nrs.harvard.edu/URN-3:HUL.INSTREPOS:37363528en-USJohn Langdon Sibley, librarianJournal Article2020-07-29