The collection includes the archival materials on the North Mazovia during The First World War, which had been collected by the outstanding Mazovian researchers: Tadeusz Swiecki and Franciszek Wybult. They both were journalists as well as social and political activists. All archive consists of 95 units placed in The Special Collection Departament of The Zielinski’s Library – the main agency of Plock Scientific Society. The first 23 digitized units of this collection include materials related to military activities and furthermore to the work of citizens’ committees and the boards of care. The project was supported by The Ministry of Culture and National Heritage.

Number of publications in collection: 23