The full content of this document is only available to subscribing institutions. More information can be found via

Title Heading of Mariposa Tunnel
Reference MS 717, folder 5
Library California Historical Society
Date n.d.
Author(s) Burr, Ephraim Willard
Description Drawing of elements of a mine.
Document Type Private Papers
Primary Commodity Silver and Gold
Theme Cultivation
Keywords mining, equipment
Region North America
Places USA, California
Copyright California Historical Society