Pękowska, M. 2018. The Pomeranian National Institute for the Deaf and Speech-Impaired in Wejherowo, 1921–1939. Introduction to research. Biuletyn Historii Wychowania. 38 (lis. 2018), 117–135. DOI:https://doi.org/10.14746/bhw.2018.38.26.