Political map of the Medieval Livonia, circa 1260, along with surrounding areas:
  Possessions of the Sword Brothers (in Livonia) and the Teutonic Order (in Prussia)  Ecclesiastical possessions
Own work, using

Turnbull, Stephen (2004)       Crusader Castles of the Teutonic Knights (2), Osprey Publishing  ISBN 1841767123
Bjorklund, Oddvar; Holmboe, Haakon; Rohr, Anders (1970) Historical Atlas of the World, Barnes &amp; Noble, NY, SBN: 389-00253-4.
This 500 year old map of Lithuania, from UNESCO
WHKMLA Historical Atlas - Estonia, accessed on November 2, 2006.
Originally created by MapMaster, commissioned by Attilios, translated by NordNordWest, modified by Furfur