- FondsHoyle - Papers of Sir Fred Hoyle
- SeriesBox 30 - Box 30
- File10 - 10/21 H atom/mg of visual extinction
- 16 more...
- Item17 - Autograph letter, signed, from David Allen (Anglo-Australian Observatory, Epping, New South Wales) to FH
- Item18 - Photocopy of typescript letter, signed, from T. Carter (Physical-Chemical Measurements Unit, Harwell Analytical Services, Didcot) to N.C. Wickramasinghe
- Item19 - Draft of letter from FH to Chandra [Wickramasinghe]
- Item20 - [FH and N.C. Wickramasinghe, Draft of an article responding to criticism levelled by H. Kroto]
- Item21 - [FH, Notes, graphs, tables and draft articles concerning the infrared absorption spectrum of E.coli]