Current Activities Updated: 10 / 2018

Help Us Save This 1916 Jeffery Quad

Last May we lost Carl Calvert to cancer. He was not only the heart and soul of the Motor Transport Museum, he also had over 80 vehicles stored and on display here at the Museum. One such vehicle here at the Museum is a 1916 Jeffery Quad, an innovative 4-wheel drive, 4 wheel steer truck that was way ahead of its time. This unique vehicle has been on display with MTM for 30 years ase of our centerpieces. The MTM would like to buy this truck and keep it on display in our showroom.

Carl’s wife, Ginger has agreed to a price of $20,000 for the truck and its trailer. Our deadline to raise the funds is by this December. We are asking for your help in our acquisition of this magnificent vehicle. Since the MTM is a 501 (c) (3) registered organization any donation is tax deductible.

Help our museum preserve the history of the 1916 Jeffery Quad.


MTM Mill to Receive Historic Monument
Presentation of Historic Monument
by the
E Clampus Vitas, Squib Bob Chapter
October 20th 10:03am

On October 20th at 10:03 am, the local “Squibob chapter of the E Clampus Vitus” association will be presenting a historical landmark on our property commemorating the Feldspar mill as an historical sight. All are invited to attend. The Ancient and Honorable Order of E Clampus Vitus is a fraternal organization dedicated to the study and preservation of the heritage of the American West. The San Diego-based Squibob Chapter of the E Clampus Vitus fraternal organization, organizes dedication ceremonies and the installation of commemorative plaques.

The mines were claimed in 1919 and in 1924 Standard Sanitary built the mill to process the mineral for distribution. The mines were considered to be the largest mass of feldspar in the world supplying the west coast from San Diego and into Canada as well as several neighboring states. Feldspar was used in the process of making glass and ceramics such as porcelain. Standard Sanitary used the feldspar in the manufacturing of their porcelain bathtubs, sinks and toilets.

The property of the mill has been our museum’s home for the past 30 years. In January 1988, the mill was acquired by Carl Calvert in a trust for use by the Motor Transport Museum and upon his passing its ownership became the museums. Among the many interests and skills, Carl was also an avid historian and after deep research he published his book concerning the history of the mill and its mining operation. The pictures above are but a sample of the photos found in the book. Carl’s book is available to purchase here at our museum. October 20th, mark it in your calendar and join us as these wild and crazy guys honor our mills history.

Attention All Members
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MTM Hours of Operation

The museum facility is open to the public every Saturday from 9AM to 5 PM.
On Wednesday and Friday we are here generally from 10 am until about 4 pm
On these days our volunteer's restoration, office and maintainence work is done
Special arrangements may be made for tours during the week by calling the Museum
at: (619) 478 2492


Read about the history of the Jeffery Quad