Faschinating separately issued German map of California, intended to illustrate the Indian Languages spoken in California. The various California Indian Tribes are located, with a color code showing the languages spoken, including Hoka, Penuti, Algonkin, Schochonen, Athapaksan, Lutuami, and Yuki. This is the first time we have ever encountered this map, which was purchased from a dealer in Vienna who confirmed that he also had never seen the map before, hence our conclusion that it is quite rare. Produced in a set of several maps of California, of which we acquired and will be offering three others, subject to prior sale. A nice opportunity to acquire a rare and interesting 20th Century map.