2015- Dr. Julian Agyeman, Professor of Urban and Enviornmental Policy and Planning Tufts University
2014 - Kashev Varma, Former Director of Global Tiger Initiative, “Changing the Conversation in Conservation.”
2013 - Dr. Lee M. Talbot, Professor, Environmental Science and Policy Department, George Mason University, "International Conservation: Some Historial Perspective and Vignettes of a Career."
2012 - Dr. Reed F. Noss, Provost’s Distinguished Research Professor at the University of Central Florida and President of the Florida Institute for Conservation Science, "Trying to Think Big in Conservation."
2011 - Jonathan "Jon" B. Jarvis, 18th Director of National Park Service, "A Call to Action: Preparing for a Second Century of Stewardship and Engagement."
2010 - Gary E. Machlis, Science Advisor to the Director, National Park Service, "American Covenant: Why National Parks Matter in the 21st Century."
2009 - Dayton Duncan, Writer, documentary filmmaker, and author, "National Parks, America's Best Idea."
2008 - Mary A. Bomar, 17th Director of National Park Service, "America's Best Idea" Turns 100."
2007 - Richard Louv, Author, "Last Child in the Woods: Saving Our Children from Nature-Deficit Disorder."
2006 - Ronald Walker, 8th Director of National Park Service, "Our National Parks: Yesterday, Today and Tomorrow."
2005 - Ed Brannon, retired US Forest Service, "The First Century of the US Forest Service: The evolution (or was it creation) of forest conservation in America.
2004 - William Brown, Gary Everhardt, Robert Stanton, and Robert Utley, Panel Discussion "Re-Creating the National Parks: The Hartzog Years."
2003 - Dale N. Bosworth, 15th Chief of the U.S. Forest Service, "Delivering Values from Public Land: Today's Challenge to Conservation."
2002 - Fran P. Mainella, 16th Director of National Park Service, "A Seamless Network of Parks."
2001-Fall - Sharyn McCrumb, New York Times Best Selling Author, Appalachian Novelist, "The Serpentine Chain: A Novelist looks at the Appalachians."
2001-Spring - Rudolph E. (Rudy) Mancke, Director of Science and Nature Programming, South Carolina Educational Television, "The Naturalist Tradition."
2000 - Beverly L. Driver, retired, USDA Forest Service, "The Leisure Profession: Where We Have Been and Where We Need to Go."
1999 - Moved to Spring 2000
1998 - William C. Everhart, Assistant to the Director for Policy, National Park Service, "George Hartzog, A Swashbuckler Among Bureaucrats."
1997 - Robert G. Stanton, 15th Director of National Park Service, "The Future of Our National Parks."
1995 - Max Oelschlaeger, Professor in Philosophy and Religion Studies at the University of North Texas, "Environmental Ethics and America's National Parks."
1994 - Mario Boza, Director, Mesoamerican Biological Corridor Project, Caribbean Conservation Corporation, "Biodiversity Conservation in Mesoamerica."
1993 - Roger Kennedy, 14th Director of National Park Service
1992 - Lee Stetson, actor, Wild Productions, "An Evening with John Muir: Conversation with a Tramp."
1991 - Frank Bracken, Deputy Secretary of the Interior, "Emerging Federal Issues in Managing Natural Resources for Recreation."
1990 - Senator Gaylord Nelson, Wilderness Society
1989 - James Ridenour, 13th Director of National Park Service, "The Expanding of Science in the Management of NPS and Science-based Decision Making."
1988 - Bill Burch, Jr., Hixson Professor of Natural Resources in Forestry and Environmental Studies, Director of Tropical Resources Institute at Yale University, "Relationships Between Natural Resources and Tourism."
1987 - Paul Pritchard, President, The National Parks and Conservation Association, "Tourism and Natural Resources: New Approaches to Old Problems."
1986 - No presentation
1985 - Stewart Udall, 37th Secretary of the Interior, discussed events of the Udall/Hartzog era
1984 - Ray Arnett, Assistant Secretary, Parks and Wildlife, "An Overview of America's Land Conservation Systems."
1983 - Senator Malcolm Wallop
1982 - Roundtable Discussion with George Hartzog, Marion Clawson, conservationist with Resources for the Future, and Bob Baker
1981 - Russ Dickenson, 11th Director of National Park Servicem "Our Legacy of Recreation Lands"
1980 - R. Max Peterson, 14th Chief of U.S. Forest Service, "Recreation: Changing Roles in a Changing Society."