Near Columbia in Tuolumne County, California — The American West (Pacific Coastal)

Monitor of Knickerbocker Flat

Photographed By Barry Swackhamer, March 2, 2012

1. Monitor of Knickerbocker Flat Marker

Inscription. This monitor used by Louis Dondero Yankee Hill Mining and Gravel 1873 produced one million dollars in gold annually. Largest monitor in Southern Mines. Hydraulic mining was prohibited by legislature in 1906. Dedicated October 28, 1967 Re-dedicated May 28, 1989. 5994 Matuca Chapter 1849 E Clampus Vitus Credo Quia Absurdum

Erected 1989 by E Clampus Vitus, Matuca Chapter 1849.

Topics and series. This historical marker is listed in this topic list: Industry & Commerce. In addition, it is included in the E Clampus Vitus series list. A significant historical date for this entry is May 28, 1848.

Location. 38° 3.374′ N, 120° 22.687′ W. Marker is near Columbia, California, in Tuolumne County. Marker is at the intersection of Yankee Hill Road and Sawmill Flat Road on Yankee Hill Road. Touch for map. Marker is at or near this postal address: 12193 Yankee Hill Road, Columbia CA 95310, United States of America. Touch for directions.

Other nearby markers. At least 8 other markers are within 2 miles of this marker, measured as the crow flies. Columbia School House (approx. 1.6 miles away); Columbia Cemetery (approx. 1.6 miles away); Columbia Masonic Cemetery (approx. 1.6 miles away); To Honor the Chinese Pioneers (approx. 1.7 miles away); Charles Crist Kress (approx. 1.7 miles away); French Camp

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(approx. 1.7 miles away); A Cosmopolitan Society (approx. 1.8 miles away); Prosper Rocher Brewery (approx. 1.8 miles away). Touch for a list and map of all markers in Columbia.

Photographed By William Jensen, September 6, 2023

2. Monitor of Knickerbocker Flat Marker

Re-education June 9th 2023

The Monitor of Knickerbocker Flat and Marker image. Click for full size.

Photographed By Barry Swackhamer, March 2, 2012

3. The Monitor of Knickerbocker Flat and Marker

Photographed By Barry Swackhamer, March 2, 2012

4. The Monitor of Knickerbocker Flat and Marker

Credits. This page was last revised on June 19, 2023. It was originally submitted on March 7, 2012, by Barry Swackhamer of Brentwood, California. This page has been viewed 611 times since then and 14 times this year. Photos: 1. submitted on March 7, 2012, by Barry Swackhamer of Brentwood, California. 2. submitted on June 11, 2023, by William Jensen of Merced, California. 3, 4. submitted on March 7, 2012, by Barry Swackhamer of Brentwood, California. • Syd Whittle was the editor who published this page.