Jon Harman has spent over twenty years pursuing rock art as a serious hobby. He is a member of the Bay Area Rock Art Research Association (BARARA), the Society for California Archaeology and the American Rock Art Research Association (ARARA). He has traveled throughout the United States as well as to Mexico, North Africa and France in search of petroglyph and pictograph sites. Jon earned a Bachelor of Arts in Mathematics in 1972 from the University of Wisconsin in Madison and a Ph.D. in Mathematics in 1980 from the University of California in Berkeley. With this background, he enjoyed a lengthy career in the field of medical imaging. He worked for a CT manufacturer and an ophthalmology device manufacturer, specializing in the design of algorithms used in creating medical images and in analyzing structures in the images.

Jon is also the founder of DStretch. Jon has presented papers on the use of DStretch at meetings of the Museum of Man in San Diego , the Society for California Archaeology, ARARA, the Nevada Rock Art Foundation, the Nevada Archaeological Association, the Bi National Meeting of Balances and Perspectives on the Anthropology and History of Baja California and the Sociedad Mexicana de Antropologia.

Leigh Marymor has been actively pursuing rock art interests for over 30 years. He is particularly interested in rock art site conservation and protection issues, and in the literature of rock art studies. Leigh is also the founder of the Rock Art Studies Bibliographic Database.

Michael received his Ph.D. in Geography from the University of California, Los Angeles. He taught at San Jose State College from 1966-67 and at the University of California, Santa Barbara from 1967-1974. He was later in charge of Environmental Planning for the City of Simi Valley between 1974-2003.

Michael has had a life long interest in archaeology, including recording of archaeological and rock art sites in the Mojave Desert and in the Transverse Ranges of California and elsewhere. Beginning in 2004, he periodically worked for W & S Consulting on archaeological surveys and excavations.

Michael has authored hundreds of articles and professional papers relating to geography, anthropology, ethnography, local history, and natural history.

Jeff has been involved in rock art research for over 25 years and has visited rock art on all 6 continents that have rock art. He has authored several publications and given numerous presentations on rock art related subjects.

By day, Jeff is an environmental attorney in San Diego, but he spends virtually all of his other time focused on rock art. He has also been involved with rock art documentation and site monitoring in the United States, Australia and Africa, including helping with projects for the Bureau of Land Management, the U.S. Forest Service, Archeoimagery, and CASSP.

In recent years, Jeff has focused on rock art photography and he won the 2017 Oliver Award from the American Rock Art Research Association for "Excellence in the Art & Science of Rock Art Photography.” He just published his comprehensive work in, Rock Art of the World.

Courtney enjoys backcountry exploring, hiking, backpacking, and photography. In 1990, he began visiting rock art sites during many of his days off and vacations and this inquiry slowly pulled him into the field of rock art research. This has led him to volunteer to record rock art sites in several states and eventually write or co-author scholarly papers on the rock art of Eastern California and Nevada for the Southern Nevada Rock Art Enthusiasts newsletter, the American Indian Rock Art publication of the American Rock Art Research Association, the Rock Art Papers of the San Diego Museum of Man, and in the Proceedings from the 2001 Millennium Conference. In addition, he has given presentations on a variety of rock art topics to various organizations that include: the Eastern California Museum, Audubon Society, University of California White Mountain Research Station, and the Mojave Rock Art Workshop.

In 2011, he was awarded the Mark Oliver Award from the American Rock Art Research Association for "Excellence in the Art & Science of Rock Art Photography.”

Courtney worked for Inyo County as a Planner and Transportation Planner before his retirement in 2018.

Steve served as a Federal archaeologist for over 30 years beginning with the Army Corps of Engineers in Los Angeles in 1980. There he worked a variety of assignments throughout southern California working the full spectrum of cultural resources issues: archaeology, historic sites, historic buildings, bridges, dams, and shipwrecks. Beginning in 1989, Steve moved to the Navy at Point Mugu which has responsibility for San Nicolas Island, until his retirement in 2013.

During his time with the Navy, Steve oversaw the excavation of dozens of archaeological sites spanning several thousand years of island occupation. He developed the Navy’s archaeology program for the island which made extensive use of local universities. He facilitated the successful archaeological field school program which brought hundreds of archaeology students to the island over the years, and has been the recipient of two Governor’s Awards for Historic Preservation-1998, 2011. Most notably, he lead the team that discovered the cave where the Lone Woman of San Nicolas Island had lived; which had been lost over the years.

Steve continues his research interest in the story of the Lone Woman of San Nicolas Island and provides volunteer support to a variety of archaeology and rock art recording projects.