- FondsAdams - Papers of John Couch Adams
- SeriesBox 30-32 - Correspondence and papers of the Adams Memorial Committee
- FileBox 32 - Correspondence, S - Y by sender, relating to the Adams Memorial Committee
- Item1/1 - Autograph letter signed to James Porter
- Item1/2 - Autograph postcard signed to James Porter
- Item1/3 - Telegram to Charles Taylor
- Item1/4 - Copy of letter to J.W.L. Glaisher
- Item2/1 - Receipt sent to James Porter
- Item2/2 - Autograph letter signed to James Porter
- Item3/1 - Autograph letter signed to James Porter
- Item3/2 - Autograph letter signed to James Porter
- Item4/1 - Autograph letter signed to James Porter
- 47 more...