Warner & Swasey Company
1880 - 1980
Founded in 1880 as a machine tool manufacturer by Worcester Reed Warner and Ambrose Swasey. Were active into the 20th century in manufacture of telescopes and other astronomical and military instruments,
"Warner and Swasey collection, 1850-1919," American Institute of Physics International Catalog of Sources, http://libserv.aip.org:81/ipac20/ipac.jsp?uri=full=3100001~!1740~!0&profile=newcustom-icos#focus (accessed 04/21/2015)