- FondsMordell - Papers of Louis Joel Mordell
- Series1-40 - Letters
- File17 - Mahler
- 22 more...
- Item17.23 - T.L.s, from Krefeld
- Item17.24 - T.L.s, from Krefeld
- Item17.25 - T.L.s, from Krefeld
- Item17.26 - T.L.s, from Krefeld
- Item17.27 - A.L.s., from Krefeld
- Item17.28 - T.L.s., from Krefeld
- Item17.29 - T.Ls., from Krefeld
- Item17.30 - T.L.s., from Krefeld
- Item17.31 - T.L.s., from Krefeld
- 11 more...