- FondsMordell - Papers of Louis Joel Mordell
- Series1-40 - Letters
- File6 - Erdos
- File6.1 - Letters
- 45 more...
- Item6.1.46 - A.L.s.
- Item6.1.47 - T.L.s.
- Item6.1.48 - A.L.s.
- Item6.1.49 - A.L.s., from Syracuse, New York
- Item6.1.50 - A.L.s., and typed copy
- Item6.1.51 - A.L.s., and typed copy
- Item6.1.52 - A.L.s., from Haifa