Gwin, William M. Senator from California, free frank "Free W M Gwin US Senate" on white envelope addressed to Falmouth, Va. with "Washington, D.C./Free" cds at left, slightly reduced at left & minor cover soiling, Very Fine, ex-Knapp. Estimate  $100 - 150. Senator Gwin, was a colorful, influential and controversial figure in California politics. He is perhaps best remembered for his tireless efforts as a champion for the establishment of the Pony Express. $0 (Image)