1. The principal mining section of San Juan County, Colorado, 1898. By Emil B. Fischer. Creator: Fischer, Emil B Published / Created: c1898. Call Number: 834 S26 1898 Container / Volume: BRBL_00589 Image Count: 1 Resource Type: Maps, Atlases & Globes Found in: Beinecke Rare Book and Manuscript Library > The principal mining section of San Juan County, Colorado, 1898. By Emil B. Fischer.