- 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
- 27 more...
- Item8/3 - 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
- Item9/4 - Autograph letter signed to James Porter
- Item9/5 - Autograph letter signed to James Porter
- Item10/1 - Autograph letter signed to James Porter
- Item10/2 - Letter to James Porter
- Item10/3 - Letter to James Porter
- 53 more...