[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 MineA. E. Mathews, DelLith. By J. Bien. N.Yundatedmining. Written on print: "Christman Greetings 1962 from John & Julia Lipsey" and a stamp indicating their bookstore.still image