Robert H. Richards papers http://hdl.handle.net/1721.3/200934 2026-04-09T23:20:15Z 2026-04-09T23:20:15Z Geological and mining excursion to Nova Scotia Robert H. Richards http://hdl.handle.net/1721.3/200935 2023-03-15T00:51:37Z 1879-01-01T00:00:00Z Geological and mining excursion to Nova Scotia Robert H. Richards For more information about this item, visit https://archivesspace.mit.edu/repositories/2/archival_objects/176722 1879-01-01T00:00:00Z