Partners: network

Arthur L. O'Brien, Matthew O'Brien

Firm Notes

These brothers practiced in San Francisco, CA, c. 1900-1920. The firm was also known as "O'Brien Brothers, Incorporated," c. 1918. In 1918, it maintained its office at 240 Montgomery Street in San Francisco. (See "Advance News" Building and Engineering News, vol. 18, no. 17, 04/24/1918, p. 9.)

PCAD id: 2803