- FondsMordell - Papers of Louis Joel Mordell
- Series1-40 - Letters
- File6 - Erdos
- File6.1 - Letters
- Item6.1.1 - T.L.s., from Budapest
- Item6.1.2 - Draft letter to 'Dear Vice Chancellor' from LJM
- Item6.1.3 - A.L.s., from Budapest
- Item6.1.4 - T.L.s., from Budapest
- Item6.1.5 - T.L.s., from Budapest
- 47 more...