WRH Office Files (Some Personal) A – H, 1948-84
- American Academy of Arts and Sciences 1971-76; Elected 13 May 1970
- American Philosophical Society May 1981 – Dec. 1982
- Athenian School 1964-69
- Bohemian Grove General (Highlanders)1975-79
- Bohemian Grove (Highlanders) 1980-83
- Bohemian Grove Membership 1974-76
- California, University of – Visiting Committee 1955-56
- Cathedral Apartments, Correspondence 1983-84
- Center for Economic Policy Research (Stanford) 1981-82, 1983, 1984
- Gimon, Eleanor & J- P, Correspondence 1973-77, 1978-80
- 1966 Mercedes 250-S, (Mrs. Hewlett); Sold to WRH 1978
- Hewlett Children – Guardianship, Wells Fargo 4-14411 1958-72
- Hewlett Children – Louise Redington Hewlett Trust, Correspondence 1959-66
