Pudłocki, Tomasz. 2020. “Polish-American Traces of Cooperation. The Correspondence of Eileen and Florian Znaniecki in the Archival Collections of the Kościuszko Foundation in New York, Part 1”. Studia Historiae Scientiarum 19 (September):443-88. https://doi.org/10.4467/2543702XSHS.20.014.12570.