This firm was in San Francisco, California. From 1869 to 1872, they were known as Son & Briggs. They became Son Brothers in the 1870s. Adolph A. Son, Albert A. Son, Abe Spitz, and Jacob Spitz were the owners (1883-1906).
In addition to the San Francisco offices, the Son Brothers operated the Yale Cutlery Company, in Meriden, Connecticut. By 1919, they were owned by Charles A. and Annie A. Son.
c 1869-1919