(Map where Lithuanian is spoken),” Kraków, on a map showing pre-WWI guberniyas, distinguishing between “Zwarty obszar jezyka litewskiego” and “Mieszany obszar jezyka litewskiego” (Dense and Mixed Lithuanian Language areas).
Year
1930
Author
J. Rozwadowski
Sources
Wroblewski Library of the Lithuanian Academy of Sciences: http://elibrary.mab.lt/