Walsh, James E.Hofer, Philip2020-07-301975Hofer, Philip, and James E. Walsh. 1975. A new Holbein attribution. Harvard Library Bulletin XXIII (1), January 1975: 42-48.0017-8136https://nrs.harvard.edu/URN-3:HUL.INSTREPOS:37364257en-USJournal Article2020-07-30