Billhead for Adolph Sutro, Dunham, Carrigan & Co., San Francisco, June 23, 1882 Billhead from Dunham, Carrigan & Co., importers of hardware, iron, and steel, located at 107-111 Front St. and 108-112 Pine St., San Francisco. The billhead is made out to Adolph Sutro, who built the Sutro Tunnel for the Comstock Lode and served as Mayor of San Francisco. Date: June 23, 1882. Part of a collection of billheads made out to Adolph Sutro.