MLA

Gunnell, A. H. Map of Waldo Consolidated Gold Mining Co. of Oregon : Property in Waldo Mining District, Josephine County , Ore. / by A.H. Gunnell. Robert A. Welcke, Photo-lith., 1911. https://collections.library.yale.edu/catalog/15821608.

APA, 6th edition

Gunnell, A. H. (1911). Map of Waldo Consolidated Gold Mining Co. of Oregon : property in Waldo Mining District, Josephine County , Ore. / by A.H. Gunnell. [Maps]. Robert A. Welcke, Photo-lith., https://collections.library.yale.edu/catalog/15821608.