Granite, Col., Sep 20, cds with matching cork handstamp canceling 1873, 3¢ green on 1870, 3¢ green entire to East River, Conn., with photocopy of original 1873 12-page enclosure written from Aug 30 while on expedition from Rock Creek Canon, mentions bathing in hot sulphur springs, other parts of letter datelined Rock Creek on Sept 6th and Taylor River on Sept 16th, Very Fine, a unique territorial handstamp usage from Granite. Estimate  $200 - 300. $0 (Image)