[Four images] [1]Gulch mining.--Colorado Gulch. [2] Spanish Arastra.--on Clear Creek. [3]The stamp process--Mr. Sensenderfer's Mill. Shaft or lode mining.--Interior of No. 1, on the Gregory, the Black Hawk Co.'s Mine
MLA
A. E. Mathews, Del, and Lith. By J. Bien. N.Y. [Four Images] [1]Gulch Mining.--Colorado Gulch. [2] Spanish Arastra.--on Clear Creek. [3]The Stamp Process--Mr. Sensenderfer's Mill. Shaft or Lode Mining.--Interior of No. 1, on the Gregory, the Black Hawk Co.'s Mine. 0AD. https://collections.library.yale.edu/catalog/2016191.
APA, 6th edition
A. E. Mathews, D., & N.Y, L. B. J. B. (0 C.E.). [Four images] [1]Gulch mining.--Colorado Gulch. [2] Spanish Arastra.--on Clear Creek. [3]The stamp process--Mr. Sensenderfer's Mill. Shaft or lode mining.--Interior of No. 1, on the Gregory, the Black Hawk Co.'s Mine [Photomechanical prints]. https://collections.library.yale.edu/catalog/2016191.
