[COLORADO]. Massive postcard collection and associated ephemera. Single-owner lifetime collection of Colorado postcards, an estimated 1,000 altogether, with a fine selection of early real-photo postcards (RPPCs), linens, lithos, and chromes, many in sleeves, together with three plastic tubs containing souvenir travel albums, 35mm slides, highway and road maps, booklets, prints, and related material on Colorado history (v.p., principally early to mid-20th century). An extensive accumulation, acquired at a high original cost, that MUST BE SEEN.