Gregersö [Alandy] - Historické mapy
Gragerso, Grageso, Gregerso, Gregersö, Groggeso, Groggesö, Grägersö, Grägesö
Související mapy
Europe in the XIX. century
Europe in the XIX. century (with the Third Military Survey)
Senate Atlas at the National Archives of Finland (1870-1907)
