Site of the First Meeting of Freemasons Held in California

On November 9, 1849, a charter was granted by the Grand Lodge of the District of Columbia for the organization of California Lodge NO. 13, now California Lodge NO. 1 of the Free and Accepted Masons. On November 23, 1848, Levi Stowell was appointed master of the new lodge, and on November 15, 1849, the lodge was formally organized under the charter.

Citation from California Office of Historic Preservation