Wednesday, April 23, 2025

The Mystery of Jupiter Mine | M.P. Pellicer

In 1897, on the corner of a building at the southeast corner of Geary Street and Grant Avenue, San Francisco the ghost of a missing man stalked the halls.

Windsor A. Keefer (Kiefer), the principal owner in the Jupiter Mine in Calaveras County went missing March 17, 1897.

He was last seen when he left to visit the mines in company of Mr. Thompson president of the mining company. They went hunting, and separated some time during the day.




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