UPPER SILESIA. Map of the plebiscite area in Upper Silesia; colors indicate: 1) territory whose affiliation will be entirely determined by a referendum, 2) territory where a referendum will be held, but regardless of the result will be assigned to Czechoslovakia if Upper Silesia remains with Poland, 3) territory to be ceded to Czechoslovakia without a vote; compiled. commissioned by Deutscher Schutzbund für die Grenz- und Auslandsdeutschen, compiled by. Kartogr. Abteilung der Preuß. Landesaufnahme 1919; two stamps in the lower margin; color print, bdb. st., traces of folding, minimal edge tears, trace of moisture; map dimensions 488x566 mm; Abstimmungsgebiet Oberschlesien; VERY RARE MAP, OF EXTREMELY HISTORICAL VALUE.