Cambridgeport (Windham County) established April 16, 1834 "CAMBRIDGEPORT, / WINDHAM CO., / W.C. STEVENS, P.M. / VERMONT earliest date seen: April 17, 1885
latest date seen: April 22, 1885
Slawson (1969): used in 1884-5, very rare
Vermont Philatelist: February 1994, page 23 (article with illustration)
