Leading mining historian Kerby Jackson introduces us to a classic mining publication on the Sierrita Mountains in Pima County, Arizona. Written in 1921, this hard to find publication includes valuable facts on the mines of this famous mining area in Pima County. Included in this small booklet are hard to find details on the history and mines and prospects of this area. Note: This edition is a perfect facsimile of the original edition and is not set in a modern typeface. As such, some type characters and images might suffer from slight imperfections or minor shadows in the page background.