Site information:

On Willms Rd, 1.3 mi S of State Hwy 120, 1.9 mi S of Knights Ferry

37.800068,-120.645845

Plaque information:

No plaque, but when I visited, there was a sign which seems like it might be temporary, but does mention the landmark status.

Sign text:

Willms Ranch State Landmark No. 415 is a California State Historical Landmark being renovated by New Interiors of Manteca.  Historical properties are protected by State and Federal laws.  Trespassers will be prosecuted to the fullest extent of the law.  Nothing can be removed from this property without consent of Willms Ranch.

Penal Code section 622 1/2.

OHP description:

Arriving in California October 12, 1849, John R. Willms and John H. Kappelmann engaged in the hotel and butcher businesses in Buena Vista, in what is now Stanislaus County. They bought up mining claims and settler's claims until, by 1852, they had a tract of 3,600 acres. The 'KW' brand was the first in Tuolumne County in 1852. After the death of Kappelmann, Willms carried on alone, and the ranch has been owned by the Willms family ever since.

Registered 11/15/1948