- HörbuchCanyon SacrificeScott Graham
- HörbuchYosemite FallScott Graham
- HörbuchYellowstone StandoffScott Graham
- HörbuchMountain RampageScott Graham
- HörbuchCanyonlands CarnageScott Graham
- HörbuchArches EnemyScott Graham
- HörbuchMesa Verde VictimScott Graham
- HörbuchSerien: National Park Mysteries (Graham)Scott Graham