- FondsAdams - Papers of John Couch Adams
- SeriesBox 30-32 - Correspondence and papers of the Adams Memorial Committee
- FileBox 31 - Correspondence, J - S by sender, relating to the Adams Memorial Committee
- 7 more...
- Item2/4 - Autograph letter signed to James Porter
- Item3/1 - Autograph postcard signed to James Porter
- Item3/2 - Autograph letter signed to James Porter
- Item3/3 - Autograph letter signed to James Porter
- Item3/4 - Autograph letter signed to Charles Taylor
- Item3/5 - Autograph letter signed to James Porter
- Item4/1 - Autograph letter signed to James Porter
- Item4/2 - Autograph letter signed to James Porter
- Item4/3 - Autograph letter signed to James Porter
- 41 more...