Jones & Russell's Pikes Peak Express Co., Denver City, Apr 26, 1860, cds on cover to Alton, Ill., franked with 1857, 3¢ dull red tied by blue "St. Joseph, Mo., May 3, 1860" cds, manuscript "P.P. and Leavenworth Ex" endorsement at bottom left, Very Fine, a nice usage of the Jones & Russell marking after the merger into the Central Overland, California and Pike's Peak Express Company and shortly after the terminus was changed to St. Joseph. Estimate  $400 - 600. $0 (Image)