- 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
- 48 more...
- Item12/3 - Autograph letter signed to James Porter
- Item13/1 - Autograph letter signed to Charles Taylor
- Item13/2 - Autograph letter signed to James Porter
- Item13/3 - Autograph letter signed to James Porter
- Item13/4 - Telegram to James Porter
- Item14/1 - Autograph letter signed to Charles Taylor
- Item14/2 - Autograph letter signed to James Porter
- Item15/1 - Autograph letter signed to Charles Taylor
- Item15/2 - Autograph letter signed to James Porter