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Clayton Historical Society and Museum

Clayton, California
News & Events
Membership & Volunteer


Welcome to the Clayton Historical Society and Museum's website!

The Clayton Historical Society was founded in 1974 to "research, collect, record, preserve, display, borrow, share, and interpret local history information and memorabilia, and to promote understanding of Clayton origins and development."

 Upcoming Events


 A Halloween


Sat, Oct 29, 6PM

at Diamond Terrace, Clayton

Featuring ghoulishly good music by the Halloween band Grimace and frightfully entertaining ghost stories and slide show by Clayton paranormal author Ellis Byrd

click here for event flyer


CHS Annual Meeting (6pm)


Behind The Barbed Wire:

History of Naval Weapons Station Concord (7pm)

Thurs, Nov 10

at Diamond Terrace,


click here for more info:



 Current Exhibit
100 Years of National Parks
Bay Point and Clayton Railroad Co and Cowell Portland Cement Co Railroads --
Rolling Through the Clayton Valley -
110 Years after Incorporation
Learn about this little-known 9-mile private short line railroad, incorporated on August 29, 1906, owned and operated by the Cowell Portland Cement Company (producers of ‘Mt Diablo Cement’), which ran from the cement plant & company town of Cowell (at the base of the Lime Ridge hills), crossing familiar roads, and alongside Mt Diablo Creek; rolling through bucolic scenery, a dairy farm, orchards and ranches of the greater Clayton Valley (much of today’s Concord Naval Weapons Station / future EBRPD  parkland), to Bay Point (today’s Port Chicago / Military Ocean Terminal Concord - MOTCO), terminating at the Santa Fe Railway interchange.
This exhibit will run through December 2016, and is open to the public at no cost, but donations are welcome.  Please visit the Clayton Museum page for viewing days and hours.

About the Museum



Clayton Historical Society

and Museum

6101 Main Street

P.O. Box 94

Clayton, CA 94517-1201
(925) 672-0240

(866) 230-5720

Wednesdays and Sundays
2:00 - 4:00 p.m.