 Perl's memoir was one of at least eight similar accounts by female prisoners, corroborated by the testimonies of other women.The infirmary encounters with Irma Grese had first been described by Olga Lengyel, a Hungarian Jewish woman and surgical assistant imprisoned at Auschwitz, in her 1947 book "Five Chimneys", originally published in French.Lengyel was the first survivor to have her testimony published in English, wrote Zoë Waxman.