Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Jan Mosdorf (30 May 1904, Warsaw - 11 October 1943, Auschwitz), was a Polish right-wing politician, director of the nationalist organization All-Polish Youth (M odziez Wszechpolska, MW) and member of the far-right political party National Radical Camp (ONR). He also worked as a publicist, using the pseudonym Andrzej Witkowski. Mosdorf died in Auschwitz concentration camp in 1943, killed for helping Jews.