- FondsLarmor - Papers of Sir Joseph Larmor
- SeriesLetters - Letters to and from Larmor
- SubseriesTo Larmor - Letters to Larmor
- FileHargreaves (Misc) - Letters from Richard Hargreaves. Also includes three letters from J. H. Jeans to JL concerning an article by RH.
- ItemHA4/1 - Autograph letter, signed, from Southport
- ItemHA4/2 - Autograph letter, signed, from Southport
- ItemHA4/3 - Autograph letter, signed, from Southport
- ItemHA4/4 - Autograph letter, signed, from Southport
- ItemHA4/5 - Autograph letter, signed, from Southport
- 12 more...