Wird thematisiert in:
- Brief (Verfasser: Infield, Henrik F.; Verfasser: Vassar College; Adressat: American Guild for German Cultural Freedom)
- Korrespondenz an Soma Morgenstern
- Brief (Verfasser: Krautheimer, Richard; Verfasser: Vassar College; Adressat: Emergency Rescue Committee)
- Brief (Verfasser: Infield, Henrik F.; Verfasser: Vassar College; Adressat: American Guild for German Cultural Freedom)