1. California. No. 991 Placer Mining- Columbia, Tuolumne County Creator: Lawrence & Houseworth, opticians Published / Created: 1865 Call Number: WA Photos Stereos Collection Title: Western Americana stereograph collection [graphic] Image Count: 2 Found in: Beinecke Rare Book and Manuscript Library > California. No. 991 Placer Mining- Columbia, Tuolumne County