Thanks to all those responsible for typing the following guidebooks: (Note: Many of the people whose names are listed did not do the actual typing, so thanks to their secretaries.) I take the responsibility for errors in formatting and scanning of figures.
1960: Allen Hubbard
1962, 1966, 1985, 1986, 1991, 1992: Steve Heron (Joyce Muzny did the typing.)
1963, 1965, 1968, 1973: Scanned and OCR by Duncan Heron
1967: Carol Meyer
1970: Ruben Giral
1971: Paul Johnstone
1972: Gail Maimone
1974: Jim Dockal
1975: Bill Miller
1976: Scanned and OCR by Duncan Heron from original copy and photographs furnished by Bob Hatcher
1977: Katharine Lee Avary
1978: Katharine Lee Avary
1979: Pete Dressel (scanned and converted directly to pdf)
1980: Matt Heller
1981: Randy Cumbest (scanned and captured as pdf file)
1984: Betty and Gail Gibson
1988: David Goode (Bob Hatcher furnished original figures)
1989: Jim Furr (scanned and captured as pdf file)
1993: Jim Furr (scanned and captured as pdf file)
1994: Skip Stoddard (furnished pdf file)
1995: Jane Gill
1996: North Carolina Geological Survey (scanned and OCR text)
1997: Kevin Steward (furnished pdf file)
1998: Don Secor (furnished original typed copy)
1999: Skip Stoddard (furnished pdf file)
2000: Doug Wyatt and Mary Harris (furnished pdf file)
2001: Scott Howard (furnished pdf file)
2002: Bob Hatcher (furnished pdf file)
2003: Kathleen Farrell (furnished pdf file)
2004: Pradeep Talwani (furnished pdf file)
2005 Bob Hatcher (furnished pdf file)
2006 Tyler Clark (furnished pdf file)
2007: Janet Roetken (furnished MS Word files)
Scanning of large maps:
1952, 1964, 1969, 1974, 1980, 1981, 1986, 1987, 1988, 1993, 1995, 1998: Bob Fraser
1999: Skip Stoddard
1968: Duke University Facilities Management Department