Records created during the WWII by the German occupation authorities, and after the war by the Polish municipal authorities. Contains files of towns (Łuków, Mińsk Mazowiecki, Siedlce, Węgrów), communes (Łuków, Tuchowicz, Dąbie, Celiny, Łysów, Skórzec, Zbuczyn, Żeliszew, Wyrozęby, Sterdyń, Chruszczewka, Korczew, Kowiesy), county (in Łuków, Węgrów, Sokołów Podlaski, Siedlce), as well as the collection of German posters of the Siedlce county. They refer to various matters, such as the registration of populations, displacements, forced labor, raising taxes and other fares, security and public o...