- FondsMordell - Papers of Louis Joel Mordell
- Series1-40 - Letters
- File17 - Mahler
- 2 more...
- Item17.3 - T.L.s., from Krefeld
- Item17.4 - T.L.s., from Krefeld
- Item17.5 - T.L.s., from Krefeld
- Item17.6 - T.L.s., from Amsterdam
- Item17.7 - A.L.s., from Amsterdam
- Item17.8 - T.L.s., from Krefeld
- Item17.9 - Copy of a letter, typed, to KM
- Item17.10 - Copy of T.L., to KM
- Item17.11 - T.L.s., from Krefeld
- 31 more...