Modern area represented: Usvyata, Pskov oblast, Russia; Scale =1:50,000; СекретноGeoTIFFhttp://purl.dlib.indiana.edu/iudl/images/VAC9619/VAC9619-001187GM G7000 S50 .S68 N-36-2-ГrusВоенно-топографическое управлениеPublicN-36-2-Г Усвяты (Usvyata, Russia)MapsRussia--UsvyataRussia1926Indiana University