These log books were kindly photographed and compiled to PDF versions by Rob Harper. Ray's Log Books contain many press clippings and also information relating to foreign caves; only the information relating to Mendip has been included here.

• Index to Ray Mansfield's logs (290 KB)
• Logbook 1 1960-1962 (114 MB)
• Logbook 2 1963 (105 MB)
• Logbook 3 1964-1965 (36 MB)
• Logbook 4 1966-1967 (308 KB)
• Logbook 5 1968-1971 (39 MB)
• Logbook 6 1971-1973 (9 MB)
• Logbook 7 1973-1975 (15 MB)
• Logbook 8 1976-1977 (7 MB)
• Logbook 9 1978-1979 (6 MB)
• Logbook 10 1979-1980 (1.5 MB)
• Logbook 11 1980-1982 (961 KB)
• Logbook 12 1982-1985 (76 KB)

Location/owner: UBSS. Photographed/scanned by: Rob Harper. Indexed by Rob Harper.