- CollectionMiscellaneous - Miscellaneous Papers
- SeriesBox 4 - Letters Bra-Bu
- FileBR2 - 3 A.Ls, s. from Francis Edmond Bray to J. R. Tanner
- ItemBR3 - A.L., s. from Karl Hermann Breul to J. G. Leatham
- ItemBR5 - A.L., s. from George Edward Briggs to Mrs [T. R.] Glover
- ItemBR6 - A.L., s. from John Brill to Sir Joseph Larmor
- ItemBR7 - A.L.,s. from Harold Hulme Brindley to Sir Joseph Larmor
- 14 more...