Nathan Dohrmann was a major importer/wholesaler/distributor of ceramics and
other hotel/restaurant supplies - not a manufacturer.  There was a branch in
Los Angeles, as well as in San Francisco; both imported hotel wares made by
Maddock with basemarks of 1896 and 1906.  In the 1894 Sanborn map, the first
covering the area around South Santa Fe Avenue in Los Angeles, the warehouse
of Parmalee Dohrman was already established in a substantial structure.  This
was a predecessor.  Z. L. Parmalee was already offering complete lines of
domestic items and imports of Bohemian, French, and Burmerse glass and china
at a Main Street location in 1886.   Hoope this helps a bit.

Roberta Greenwood