Mining historian Kerby Jackson introduces us to a classic mining work in this important re-issue of "Register of Mines and Minerals of San Diego County, California." Unavailable since the turn of the century, this publication offers rare insights into the famous mining areas of San Diego County, California. Included in this small booklet are facts about numerous gold and other types of mines in San Diego County. Included are basic facts about lode and placer mines such as their location, geology, ore characteristics, ownership details and more. This small booklet will be found to be of great value in the field for prospectors, treasure hunters, historians and explorers. 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.