Billhead of Porter, Oppenheimer, Slessinger & Co., San Francisco, California, October 5, 1881 Billhead from Porter, Oppenheimer, Slessinger & Co., dated October 5, 1881. The billhead lists the company's address as 117 Battery Street, San Francisco, California, with a factory located at the corner of Sansome and Clay Streets. It specifies that payments are payable in U.S. Gold Coin and mentions a tannery in Soquel, Santa Cruz County.
