- FondsMordell - Papers of Louis Joel Mordell
- Series1-40 - Letters
- File19 - Miscellaneous Letters
- 96 more...
- Item19.97 - T.L.s., from John von Neumann, Princeton
- Item19.98 - A.L.s., from A. Oppenheim, Edinburgh
- Item19.99 - A.L.s., from A. Oppenheim, Singapore
- Item19.100 - A.L.s., from A. Oppenheim, Brighton
- Item19.101 - A.L.s., from Oystein Ore, Oslo
- Item19.102 - A.L.s., in German, from Oskar Perron, Switzerland
- Item19.103 - A.L.s., in German, from Oskar Perron, Diessen am Ammersee
- Item19.104 - A.L.s., from H. Petersson, Hamburg
- Item19.105 - A.L.s., in German, from K. Petr, University of Strasbourg
- 36 more...