Lot
19 
Southern Overland Mail and Express Co., Barlow & Sanderson Proprietors, Principal Office, Pueblo, Col., corner card on cover with illustrated design showing Six-Horse Stage on Mountain Road, Stage with "Overland U.S. Mail, B. & S." imprint, bearing 3¢ green (207) tied by quartered cork, matching "Kansas City, Mo. Dec 31" cds at right; cover reduced at right slightly into illustration, otherwise Very Fine and scarce westward use, ex-Risvold.Thomas No. OVM-404 Estimate $500 - 750.
Barlow and Sanderson was a dominant express company in southern Colorado and the San Juan Mountain region. It eventually gave way to the advancing railroads.