- CollectionMiscellaneous - Miscellaneous Papers
- SeriesBox 4 - Letters Bra-Bu
- FileBU1a - Letters to Kenneth George Budden (1915-2005)
- Item1 - ALS to Budden from W.L. Balls, Cavendish laboratory Cambridge
- Item2 - TLS to Budden from W.L. Balls, Cavendish laboratory Cambridge
- Item3 - TLS to Budden from W.W. Graves, University Registry
- Item4 - TLS to Budden from F.P. White, St John's College
- Item5 - ALS to Budden from F.P. White, St John's College
- Item6 - Typescript draft obituary for E.V. Appleton by Budden
- Item7 - ALS to Budden from Guy Lee, St John's College
- Item8 - ALS to Budden from Guy Lee, St John's College