- FondsHoyle - Papers of Sir Fred Hoyle
- SeriesBox 18 - Box 18
- File6 - [Folder 6]
- Subfile2 - Drafts of replies to letters received by FH during the period around Sep. to Nov. 1969, mainly concerning the Institute of Theoretical astronomy
- Item1 - Drafts of two letters from FH
- Item2 - Draft of letter form FH to Pierre
- Item3 - Draft of letter form FH to R.J. Tayler
- Item4 - Drafts of two letters from FH
- Item5 - Drafts of two letters from FH
- 3 more...