Jewish Women's Archive. "Letters from Walter Artzt to Rabbi Joel S. Geffen, and from Rabbi Joel S. Geffen to Madame Alexander." (Viewed on December 25, 2024) <https://jwa.org/media/letters-from-walter-artzt-to-rabbi-joel-s-geffen-and-from-rabbi-joel-s-geffen-to-madame-alexan>.