Olejnik, Oskar. “Wouldn’t Mendelson Work Something Out? – Genesis of Polish Socialist Party of the Prussian Partition in the Light of Connections With London’s Socialists”. In Vade Nobiscum, Tom XX 2019: Studia Z Historii Politycznej I Wojskowej, edited by Piotr Budzyński, Maciej Dawczyk, Krzysztof Gryglewski, and Michał Ziółkowski, 169–185. Vade Nobiscum. Poland: Lodz University Press, 2019. Accessed January 25, 2026. https://www.press.uni.lodz.pl/index.php/wul/catalog/book/1483/chapter/4590.