- FondsAdams - Papers of John Couch Adams
- SeriesBox 30-32 - Correspondence and papers of the Adams Memorial Committee
- FileBox 30 - Correspondence, A - J by sender, and papers relating to the Adams Memorial Committee
- 75 more...
- Item19/2 - Autograph letter signed to James Porter
- Item19/3 - Autograph letter signed to James Porter
- Item19/4 - Autograph letter signed to James Porter
- Item20/1 - Autograph letter signed to James Porter
- Item20/2 - Autograph letter signed to James Porter
- Item20/3 - Autograph letter signed to James Porter
- Item20/4 - Autograph letter signed to James Porter
- Item21/1 - Autograph letter signed to James Porter
- Item21/2 - Autograph letter signed to James Porter
- 5 more...