Ethnographic Map of Lithuania Minor: c1900 - 1907
c1900-1907 Paul Langhans: "Nationalitaten-Karte der Provinz Ostpreussen..." (East Prussian Communities by Mother Tongue), Gotha, published in 1907 by Justus Perthes at a scale of 1:500 000, distinguishing between German-,
Polish- and Lithuanian-speaking communities. With higher-resolution DETAIL images of the Memelland, Lithuania Minor, and communities near Kovno and Suwalki guberniyas. From www.gauss.suub.uni-bremen.de/suub/hist/index