- FondsMordell - Papers of Louis Joel Mordell
- Series1-40 - Letters
- File6 - Erdos
- File6.1 - Letters
- 18 more...
- Item6.1.19 - T.L.s., from Budapest
- Item6.1.20 - T.L.s., from L. Erdos, Budapest
- Item6.1.21 - T.L.s., from L. Erdos, Budapest
- Item6.1.22 - A.L.s., from Konig bei Jagerndorf
- Item6.1.23 - T.L.s., in German, from Anna Erdos, Budapest
- Item6.1.24 - T.L.s., from Budapest
- Item6.1.25 - T.L.s., from Budapest
- Item6.1.26 - T.L.s., from Budapest
- Item6.1.27 - T.L.s., from Budapest
- 25 more...