Cowan, R. Guy, 1884-19572017-09-252017-09-251905-07-09http://hdl.handle.net/10829/8000Guy Cowan wrote a letter to Binns, asking questions regarding Maine Flint and Spar company, Kenturcky no. 5 ball clay, and other subjects.4 pagesen-USCowan, R. Guy, 1884-1957Binns, Charles Fergus, 1857-1934Harley, ErnestEmploymentFlintLetter from R. Guy Cowan to Charles F. Binns, July 9, 1905Correspondence