Total unsolved cases – 164 

ALABAMA

06-29-2007 – David Michael Burney – Bankhead Forest
01-25-2015 – James Taylor Wall – Bankhead National Forest

ALASKA

– 05-04-2014 – Sandra Gelber – Glacier Bay National Park
– 05-23-2014 – Sharon Buis – Glacier Bay National Park

ARIZONA

– 05-21-1922 – Bobbie Eckerman – Coronado National Forest
01-13-1980 – Paul Braxton Fugate – Chiricahua National Park
05-19-1998 – David Barclay Miller – Coconino National Forest
07-02-2001 – Justin Lee Richardson – Kaibab National Forest
04-01-2007 – Reinhard Kirchner – Navajo Reservation Wilderness
05-22-2010 – Kaylene Gallegos – White Mountain Apache Forest
– 03-31-2011 – Adam Clayton Lyle Jones – Grand Canyon National Park
– 07-28-2012 – Shaun Rentz – Coconino National Forest
– 01-31-2015 – Drake Kramer – Grand Canyon National Park
– 06-02-2015 – Morgan Heimer – Grand Canyon National Park
– 06-19-2015 – Janet Castrejon – Chiricahua National Monument
– 09-14-2015 – Lawrence Kosden – Chiricahua National Monument
– 06-17-2016 – Floyd E. Roberts III – Grand Canyon National Park
– 09-17-2017 – Jonghyon Won – Grand Canyon National Park

ARKANSAS

CALIFORNIA

– 06-17-1909 – FP Shepherd – Yosemite National Park
– 06-11-1925 – Frank Koenman – Yosemite National Park
– 04-26-1933 – Godfrey Wondrosek – Yosemite National Park
– 01-01-1940 – Billy Coleman – Lassen Volcanic National Park
– 06-09-1941 – Norris Parent – Yosemite National Park
– 07-18-1943 – Emerson Holt – Yosemite National Park
– 05-27-1945 – William Dickenson – Yosemite National Park
– 06-29-1947 – Greta Mary Gale – Lassen Volcanic National Park
– 08-08-1948 – Malcom McClintock – Yosemite National Park
– 09-03-1950 – Louis Miller – Yosemite National Park
– 07-20-1954 – Walter Gordon – Yosemite National Park
– 10-09-1954 – Orvar Von Laas – Yosemite National Park
– 07-12-1960 – Bruce Howard Kremen – Angeles National Forest
– 07-28-1967 – Kenneth Klein – Yosemite National Park
– 08-08-1967 – Tom Opperman – Yosemite National Park
– 05-31-1969 – Nelson Paisley – Yosemite National Park
– 06-18-1970 – Christine Fuentes – Yosemite National Park
– 06-20-1970 – Jerome Oldiges – Yosemite National Park
– 07-01-1971 – Steven Brown – Yosemite National Park
– 07-20-1971 – Randy Friedman – Yosemite National Park
– 07-24-1972 – Dikran Knadjian – Yosemite National Park
– 07-13-1974 – Angelo Nicola Gatti Jr. – Cleveland National Forest
– 02-24-1978 – Gary Dale Mathias – Plumas National Forest
– 07-25-1981 – Stacy Ann Arras – Yosemite National Park
11-26-1982 – Peter Lann – Los Padres National Forest

– 06-25-1983 – Nyleen Kay Marchall – Helena National Forest
– 02-14-1988 – Albert O’Leary – Angeles National Forest
– 10-10-1988 – Randy Charles Spring – Mt. San Jacinto State Park
– 07-05-1988 – Timothy Barnes – Yosemite National Park
– 01-08-1991 – Elizabeth Bartholomew – Sierra National Forest

07-22-1996 – Cornelia Meyer – Death Valley National Park
– 05-25-1998 – David Paul Morrison – Yosemite National Park
06-11-1998 – Jonathan Aujay – Angeles National Forest

05-22-1999 – Carl Herbert Landers – Lake Helen
– 09-09-1999 – Paul Matthew Head – Sierra National Forest
04-05-2000 – Kieran Burke – Yosemite National Park
– 06-23-2000 – Peggy Ilene Humber – Sequoia National Forest
– 08-14-2000 – Ruthanne Ruppert – Yosemite National Park
– 08-18-2000 – Rosemary Theresa Kunst – Marble Mountain Wilderness
– 09-30-2002 – Walther H. Reinhard – Yosemite National Park
– 12-15-2002 – Angela Fullmer – Shasta-Trinity National Forest
06-15-2005 – Michael Ficery – Yosemite National Park
– 12-05-2006 – David Boone – Whiting Ranch Wilderness Park
– 10-31-2008 – Robert S. Willis IV – Sierra National Forest
01-06-2010 – Katherine Truitt – Point Reyes National Seashore
04-28-2010 – Randall Gene Young – Los Padres National Forest
– 10-27-2010 – Eric Christopher Grant – Navarro Headlands State Park
– 06-17-2011 – George Penca – Yosemite National Park
– 08-06-2014 – Arvin Nelson – Pfeiffer Big Sur State Park
– 10-28-2015 – Daniel Gallardo – Tahoe National Forest
– 01-05-2016 – Dona Marie Perry – Los Padres National Forest
01-25-2016 – Jorge Serrano Zaldivar – Angeles National Forest
05-01-2016 – Michael Patrick Flynn – Angeles National Forest
– 09-17-2016 – Peter Jackson – Yosemite National Park

COLORADO

07-02-1938 – Alfred Beilhartz – Rocky Mountain National Park
06-27-1981 – Cynthia Atterbury – Pike National Forest
07-11-1984 – Christopher Harvey – San Juan National Forest

08-07-1988 – Kieth Reinhard – Arapaho/Roosevelt National Park
09-06-2002 – Teresa Schmidt – Pike National Forest
– 06-09-2013 – Mitchell Dale Stehling – Mesa Verde National Park

CONNECTICUT

DELAWARE

FLORIDA

10-02-1966 – Nancy Leichner – Ocala National Forest
– 08-25-1992 – Thomas Andrews – Apalachee National Forest
– 12-25-2006 – Leonard Taku – Ocala National Forest
03-05-2011 – Roger Sawyer – Everglades National Park
12-27-2011 – Lacey Marie Buenfil – Ocala National Forest
– 04-26-2015 – Warren Ward – Everglades National Park
– 01-19-2017 – Daniel Ray Carnahan – Ocala National Forest

GEORGIA

HAWAII

11-25-1999 – John Cameron Reece – Awini Trail, Kapaau
06-06-2003 – Timothy Lynch – Hawaii National Park
– 04-13-2005 – Arman B. Johnson – Hawaii Volcanoes National Park

IDAHO

11-08-1981 – Clyde Bowman – Salmon National Forest
05-17-1998 – Christopher Holverson – Targhee National Forest

09-19-2008 – Ronald Scott Gray – Nez Perce National Forest

ILLINOIS

INDIANA

IOWA

KANSAS

KENTUCKY

LOUISIANA

MAINE

MARYLAND

MASSACHUSETTS

MICHIGAN

– 08-26-1993 – Jan Pattison – Baraga State Forest Area
– 03-17-2004 – Christopher Hallaxs – Tahquamenon Falls State Park

MINNESOTA

– 08-11-2012 – Donald Weston Dugger – Beltrami Island State Forest

MISSISSIPPI

MISSOURI

09-24-1996 – Robert C. Garman – Mark Twain National Forest
– 04-19-2016 – David Karl Heitman – Mark Twain National Forest

MONTANA

06-25-1983 – Nyleen Marshall – Helena National Forest
07-22-1984 – Curtis A. Holmen – Placid Lake State Park
04-06-1991 – Daniel Campbell – Yellowstone National Park
11-02-2000 – Patrick Whalen – Glacier National Park
– 06-19-2017 – Eric Hellmuth – Bob Marshall Wilderness

NEBRASKA

NEVADA

– 07-07-2002 – Carl Sanders – Humboldt-Toiyabe National Forest
– 02-14-2006 – Judith Ellen Casida – Pumpernickel Valley
– 04-13-2011 – Patrick Francis Carnes – Pumpernickel Valley

NEW HAMPSHIRE

NEW JERSEY

NEW MEXICO

– 03-17-1993 – Gordon Vessels – Manzano Mountains State Park
– 08-31-1998 – Emma Frances Tresp – Santa Fe National Forest
– 09-06-2009 – Melvin Nadel – Santa Fe National Forest

NEW YORK

– 08-27-1993 – Earl Eric Dunckel – Adirondack Forest Preserve
– 04-21-2006 – George James LaForest Jr. – Siamese Ponds Wilderness

NORTH CAROLINA

NORTH DAKOTA

OHIO

OKLAHOMA

OREGON

– 02-22-1911 – B. B. Bakowski – Crater Lake National Park
– 1935 – Herbert Brown – Silver Creek Falls State Park
– 06-21-1941 – Betty McCullough – Silver Creek Falls State Park
– 08-30-1959 – Richard Herman – Emigrant State Park
– 05-30-1960 – Martin Jerome Ryan – Silver Falls State Park
– 12-05-1961 – James McCormick – Mt. Hood National Forest
– 10-08-1969 – Robert Winters – Deschutes National Forest
– 10-14-1976 – Charles McCullar – Crater Lake National Park
– 06-22-1978 – Edward Chester Nye – Sky Lakes Wilderness
– 10-22-1989 – Nathan Madsen – Deschutes National Forest
– 11-23-1991 – Corey Fay – Badger Creek Wilderness
– 06-18-1994 – Wayne David Powell – Umpqua National Forest
09-24-1995 – Kenneth Budlong – Mount Hood National Forest
10-02-1998 – Robert Bobo – Rogue River National Forest
12-05-1998 – Derrick James Engebretson – Winema National Forest
– 06-17-2001 – Corwin Osborn – Three Sisters Wilderness
– 08-09-2001 – Jason Franks – Winema National Forest
10-17-2004 – Jeromy Ivan Childress – Tillamook State Forest
– 11-10-2005 – Glenda Sue Shoptaugh – Mt. Hood National Forest
– 01-09-2006 – Russell Matthew Gonzales – Willamette National Forest
– 10-14-2006 – Samuel Boehlke – Crater Lake National Park
– 07-12-2010 – Robert Perry Bissell – Roaring Wilderness Area
– 06-30-2011 – Steven Moline Jr. – Mount Hood National Forest
– 08-14-2017 – Nikolas James Roche – Siuslaw National Forest

PENNSYLVANIA

RHODE ISLAND

– 02-04-2002 – Jay Cee – Pisgah National Forest

SOUTH CAROLINA

SOUTH DAKOTA

TENNESSEE

– 06-14-1969 – Dennis Martin – Great Smokey Mts National Park
– 10-08-1976 – Trenny Gibson – Great Smokey Mts National Park
– 09-25-1981 – Thelma Melton – Great Smokey Mts National Park
– 03-17-2012 – Derek J. Lueking – Great Smokey Mts National Park

TEXAS

UTAH

VERMONT

VIRGINIA

– 06-01-1996 – Julianne Williams – Shenandoah National Park
– 06-01-1996 – Laura Winans – Shenandoah National Park

WASHINGTON

– 08-03-1963 – Bobby Panknin – Nolte State Park
– 10-19-1973 – Jimmy Duffy – Okanogan-Wenatchee National Forest
– 06-15-1974 – Jeffrey Michael Bratcher – Ocean City State Park
– 01-01-1975 – Loralee Sue Lhotka – Wenatchee National Forest
– 08-16-1975 – Steve Martin – Kaniksu National Forest
– 07-26-1989 – Diane Leslie Reeves – Mt. Baker National Forest
– 07-18-1990 – Beverly Cummings – Okanogan Wenatchee Forest
– 11-23-1997 – Cheryl Lynn Valenti – Gifford Pinchot National Forest
– 06-20-2006 – Stephen Mason – Olympic National Park
– 07-05-2005 – Gregory R. Brown – Alpine Lake Wilderness
– 06-24-2006 – Gilbert Mark Gilman – Olympic National Park
– 07-12-2010 – Robert Bissell – Roaring River Wilderness Area
– 06-09-2013 – Maureen Kelly – Gifford Pinchot National Forest
– 09-28-2013 – Kristopher Zitzewitz – Gifford Pinchot National Forest
– 10-05-2013 – Jason Lee Lovelady – Mt. Baker Wilderness
– 06-29-2017 – Wilford Ray Johnson – Pinchot National Forest

WEST VIRGINIA

WISCONSIN

– 06-20-2003 – Andrew Robert Bliss – Nicolet National Forest

WYOMING

– 04-12-1966 – Dennis Eugene Johnson – Yellowstone National Park
07-24-1997 – Amy Bechtel – Shoshone National Forest
– 08-02-2006 – Bruce Pike – Yellowstone National Park
– 10-11-2006 – Charles Gustafson – Medicine Bow National Forest

– 09-24-2010 – Stuart Isaac – Yellowstone National Park