- 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
- 18 more...
- Item4/6 - Autograph letter signed to James Porter
- Item5/1 - Autograph letter signed to James Porter
- Item5/2 - Autograph postcard signed to James Porter
- Item5/3 - Autograph postcard signed to James Porter
- Item5/4 - Autograph letter signed to James Porter
- Item6/1 - Autograph letter signed to James Porter
- Item6/2 - Autograph letter signed to James Porter
- Item7/1 - Autograph letter signed to James Porter
- Item7/2 - Autograph letter signed to James Porter
- 30 more...