“Apt: Sefer zikaron le-ir va-em be-yisrael”, ed. Tel Aviv 1966, https://www.jewishgen.org/Yizkor/opatow/opatow.html
The Memory of Treblinka Foundation
“Apt: Sefer zikaron le-ir va-em be-yisrael”, ed. Tel Aviv 1966, https://www.jewishgen.org/Yizkor/opatow/opatow.html