- FondsLarmor - Papers of Sir Joseph Larmor
- SeriesLetters - Letters to and from Larmor
- SubseriesTo Larmor - Letters to Larmor
- FileOrr (Misc) - Letters from William McFadden Orr
- 6 more...
- ItemOR1/7 - Autograph letter, signed, from Comber
- ItemOR1/8 - Autograph letter, signed, from Dublin
- ItemOR1/9 - Autograph letter, signed, from Dublin
- ItemOR1/10 - Autograph letter, signed, from Dublin
- ItemOR1/11 - Autograph letter, signed, from Portrush
- ItemOR1/12 - Autograph letter, signed, from Dublin
- ItemOR1/13 - Autograph letter, signed, from Greystones
- ItemOR1/14 - Autograph letter, signed, from Dublin
- ItemOR1/15 - Autograph letter, signed, from Dublin
- 14 more...