Medallions (Polish Medaliony, ISBN 0810117436) is a book consisting of seven short stories by a Polish author Zofia Nałkowska. The book was published in 1946, soon after the end of the WW2 and she calmly related stories of Nazi atrocities and tragic fates of their victims.
Nałkowska was a member of a special comittee for inverstigation of Nazi crimes in Poland therefore she had learned facts directly from the victims and witnesses.
See also: holocaust.