Marshall's electro magnetic rods for locating mines of gold and silver, or any metal that contains either of two : also for the discovery of buried treasures

• 1888?

• H.A. Ells & Co

• Lingenfelter, Richard E.

1 sheet ([2] pages) ; 23 cm

text

Special Collections copy formerly owned by Richard and Naomi Lingenfelter

• H.A. Ells & Co.

• Gold mines and mining
• Metal detectors
• Mines and mineral resources--Equipment and supplies
• Silver mines and mining

• text

• English

[Chicago], H.A. Ells & Co.

Richard and Naomi Lingenfelter Western Mining Collection

Public domain (US)

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2020-10-26