Cite

The principal mining section of San Juan County, Colorado, 1898. By Emil B. Fischer.

MLA

Fischer, Emil B. The Principal Mining Section of San Juan County, Colorado, 1898. By Emil B. Fischer. 0AD. https://collections.library.yale.edu/catalog/15818447.

APA, 6th edition

Fischer, E. B. (0 C.E.). The principal mining section of San Juan County, Colorado, 1898. By Emil B. Fischer. [Maps]. https://collections.library.yale.edu/catalog/15818447.