- 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
- 18 more...
- Item7/2 - Autograph letter signed to James Porter
- Item7/3 - Autograph letter signed to James Porter
- Item8/1 - Autograph letter signed to James Porter
- Item8/2 - Autograph postcard signed to James Porter
- Item8/3 - Autograph letter signed to James Porter
- Item8/4 - Autograph letter signed to James Porter
- Item9/1 - Autograph letter signed to James Porter
- Item9/2 - Autograph letter signed to James Porter
- Item9/3 - Autograph letter signed to James Porter
- 29 more...