Rosita, Col., May 3/75, manuscript postmark on 1¢ postal card to Greeley, Col., Very Fine, the only recorded manuscript territorial postmark from Rosita. Estimate  $200 - 300. Southwest of Canon City, reached by roads along Grape Creek or Hardscrabble Creek, was the Rosita mining district in the West Mountain Valley. The post office was established late in the territorial period on July 8, 1874. $0 (Image)