- FondsLarmor - Papers of Sir Joseph Larmor
- SeriesLetters - Letters to and from Larmor
- SubseriesTo Larmor - Letters to Larmor
- FileParker (Misc) - Letters from John Parker
- ItemPA5/1 - Autograph letter, signed, from Clitheroe
- ItemPA5/2 - Autograph letter, signed, from Clitheroe
- ItemPA5/3 - Autograph letter, signed, from Clitheroe
- ItemPA5/4 - Autograph letter, signed, from Clitheroe
- ItemPA5/5 - Autograph letter, signed, from Clitheroe
- ItemPA5/6 - Autograph letter, signed, from Clitheroe
- ItemPA5/7 - Autograph letter, signed, from Clitheroe
- 4 more...