Note
Received in 1957 from Tony Dunbar A.H.S. (A. H. Starrett)
1838 Nathaniel Richardson became partner in a water powered machine shop in Athol Mass. by 1849 he was in partnership with his brother Luna Bolles Richardson as N. & L. B. Richardson. In 1855 N. Richardson became sole proprietor. This bevel marked L. B. Richardson 1858 must be Luna Bolles Richardson, 1858. Information on N. & L. B. Richardson obtained from The Vintage Machinery.org web site.