ADAMS & CO. EXPRESS, CHINESE CAMP (CAL.), MOSTLY CLEAR OVAL WITH MS. DATE NEATLY CANCELS 3C DULL RED (II), MARGINS CLEAR TO AMPLE, ON YELLOW COVER TO SACRAMENTO CAL., WITH BLUE 'ADAMS & CO. SACRAMENTO' DOUBLE CIRCLE RECEIVING DATESTAMP, TRIVIAL BACKFLAP FLAWS, STILL QUITE FRESH AND EXTREMELY FINE, VERY SCARCE IN THIS CONDITION, FROM A GOLD MINING REGION THAT WAS POPULATED BY OVER 1000 CHINESE GOLD MINERS DURING THIS PERIOD; ADAMS & CO. WENT BANKRUPT IN 1855, EX WEST, J.D. BAKER