- FondsMordell - Papers of Louis Joel Mordell
- Series1-40 - Letters
- File19 - Miscellaneous Letters
- 12 more...
- Item19.13 - A.L.s., from E. A. Benians, Cambridge
- Item19.14 - T.L.s., from Harald Bershom, Uppsala
- Item19.15 - T.L.s., from W. E. H. Berwick, University College of North Wales, Bangor
- Item19.16 - T.L.s., from W. E. H. Berwick, University College of North Wales, Bangor
- Item19.17 - A.L.s., in German from E. Bessel-Hagen, Halle
- Item19.18 - A.L.s., from G. Billing(?), Upsala
- Item19.19 - T.L.s., from Garrett Birkhoff, Harvard
- Item19.20 - A.L.s., from H. F. Blichfeldt, Stanford University
- Item19.21 - A.L.s., in German, from O. Blumenthal, Aachen
- 120 more...