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The one between 19-20th century seems to be only discussed in Polish-language sources.
During WW2 - best source is probably Jan Karski "Story of a secret state" (widely available in paper and e-book)
And the one in communist Poland: "The flying university in Poland, 1978-1980", H Buczynska-Garewicz - Harvard Educational Review, 1985 and "The Flying University" C Pszenicki - Index on Censorship, 1979