Columbia subject headings:
Holocaust, Jewish (1939-1945)--Germany--Mühlheim am Main.
Isaacson family.
Isaak, Leopold, 1894-1942.
Jews--Germany--Mühlheim am Main.
Mühlheim am Main (Germany)--Ethnic relations.
Harvard subject headings:
Holocaust, Jewish (1939-1945)--Germany--Mühlheim am Main.
Isaak, Leopold, 1894-1942.
Jews--Germany--Mühlheim am Main--Biography.
Mühlheim am Main (Germany)--Biography.
Princeton subject headings: