W.E. Singer & Co.s Express, Feather River (Cal.), clear blue double-lined oval express company marking, with mostly clear black 'Paid' of Washington D.C., on an elaborating printed attorney's advertising form to Hamilton Cal., mainly concerns military claims and pensions, minor edge separation, still intact and fresh, very fine, very scarce and unusual on a trans-continental unsealed circular, Singer operated many companies from Marysville Cal. to the Feather River mining camps, this one dates ca. 1855