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Near Hornbook in Siskiyou County, California — The American West (Pacific Coastal)
 

Wilkes Expedition

 
 
Wilkes Expedition Marker image. Click for full size.
Photographed by Barry Swackhamer, August 21, 2015
1. Wilkes Expedition Marker
Inscription.
On September 29 and 30, 1841, a detachment of the Wilkes expedition numbering 33 persons under the command of lt. George Emmons camped near this site. The party was in route from Fort Vancouver, Washington to Yerba Buena, California, and spent two days here because of illness in the party.
Documented by the Siskiyou County Historical Society

 
Erected by Siskiyou County Historical Society.
 
Topics. This historical marker is listed in this topic list: Exploration. A significant historical date for this entry is September 29, 1841.
 
Location. 41° 58.398′ N, 122° 26.112′ W. Marker is near Hornbook, California, in Siskiyou County. It is on Iron Gate Lake Road (Copco Road) near Camp Creek Road, on the left when traveling east. Touch for map. Marker is in this post office area: Hornbrook CA 96044, United States of America. Touch for directions.

Regionally, this marker is on California’s Modoc Plateau, in the Shasta Cascade, and in the Klamath Mountains. It is also in the American Mountain West and specifically in the Pacific Northwest. Globally, it is in North America, in the Cascade Range, on the Ring of Fire, in the Pacific Rim, in the Western Hemisphere, in the Western World, and in the Anglosphere. Historically, it finds itself in what was once New Spain and also Mexico’s Alta California.

Other nearby markers. At least 8 other markers are within 10 miles of this marker, measured as the crow flies: Klamathon (approx. 6.4 miles away); All Roads Lead to Ager Stage and Freight Stop (approx. 7½ miles away); Founding of the American Legion (approx. 7.6 miles away); Cottonwood (approx. 8.1 miles away); Cottonwood Basin (approx. 8.3 miles away); Bradford Ripley Alden
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(approx. 8.3 miles away); Hilt, CA (approx. 9.7 miles away); Hilt War Memorial (approx. 9.7 miles away).
 
More about this marker. This marker is located at the Camp Creek Recreational Area, approximately 12 1/2 miles east of Interstate 5 on Copco Road.
 
Also see . . .  Wilkes Exploring Expedition - Naval History Blog. A U.S. Exploring Expedition was authorized to conduct exploration of Pacific Ocean and South Seas. This was the first major scientific expedition overseas by the United States. LT Charles Wilkes USN, led the expedition in surveying South America, Antarctica, Far East, and North Pacific. (Submitted on September 26, 2015, by Barry Swackhamer of Brentwood, California.) 
 
Wilkes Expedition Marker image. Click for full size.
Photographed by Barry Swackhamer, August 21, 2015
2. Wilkes Expedition Marker
 
 
Credits. This page was last revised on June 16, 2016. It was originally submitted on September 26, 2015, by Barry Swackhamer of Brentwood, California. This page has been viewed 591 times since then and 21 times this year. Photos:   1, 2. submitted on September 26, 2015, by Barry Swackhamer of Brentwood, California.
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Jun. 13, 2026