- BARNES (Fran) 1922-2003
Author of "Canyon Country Arches and Bridges" book, the most complete book (416 pages) about natural arch (geology formation, history, protection, etc...).
- BRANDT-ERICHSEN (David)
Span (The newsletter of the Natural Arch and Bridge Society) Editor from 1994 to 2001. He has a lot contributed to the richness and expansion of the NABS's community.
- FAUSTINI(Arnaldo)
Italian Geographer; first documented manscript about natural arch (1918) with 950 units.
- HOROWITZ(Dany)
Co-founder of "Natural Arch and Bridge Society" (NABS) and president from 1989 to 1992.
- MC CARRICK (Edward)
Seasionnal ranger at "Arches National Park"; co-author of "The arches of Arches National Park: a comprehensive study".
- MILLAR (Ray)
British arch hunter. He has documented many natural arches around the world for the "Journal of Natural Arch Discoveries" and SPAN.
- MOORE (Chris)
Famous arch hunter; editor of the "Journal of Natural Arch Discoveries" (45 issues published). Editor of numerous arches guide books since 1992.
- MOORE (Bob)
NABS president from 1998 to 2004.
- RANNEY (Alex)
Arch hunter; several great SPAN articles about Canyonlands National Park areas.
- STEVENS (Dale) 1936-1996
Professor of geography; co-author of "The arches of the Arches National Park: a comprehensive study". NABS president in 1995.
- VAN BEBBER(Thomas)
Creator of the first CD-Rom Data Base about natural arches, the "World Arch Database"; SPAN Editor since 2002 and NABS President since 2005.
- VREELAND(Robert) 1917-2005
Pioneer arch hunter. Self-publisher of "Nature's Bridges and Arches" (18 booklets between 1976 and 1995). His outstanding pioneering about natural arches has resulted in a new generation of arch hunters enthousiasts.
- WILBUR(Jay)
Co-founder of "Natural and Bridge Society". SPAN Editor between 1988 and 1993. NABS president between 1996 and 1997.