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Books about Niedbalski:
Astounding Science-Fiction 1938 Vol. 21 # 03 May: The Legion of Time (pt 1) / Three Thousand Years (pt 2) / Island... by John W. Jr. (editor): Jack Williamson / Thomas Calvert McClary / Nat S Campbell and Charles Schneeman (front cover) (1938)
Wiki information Niedbalski:
Stanislaw Niedbalski was a cinematographer.
Józef Niedbalski was the father of film director Ludmiła Niedbalska.