Cite

Hope Gold Cos. mill & buildings : Gold Dirt Lode, Gilpin Count., Colorado, 1866

MLA

Sachse, E. (Edward), artist. Hope Gold Cos. mill & buildings : Gold Dirt Lode, Gilpin Count., Colorado, 1866. [1866]. https://collections.library.yale.edu/catalog/2016193.

APA, 6th edition

Sachse, E. (Edward), artist. ([1866])[Hope Gold Cos. mill & buildings : Gold Dirt Lode, Gilpin Count., Colorado, 1866]. https://collections.library.yale.edu/catalog/2016193.