Close-up of ranger crouching in grassEverglades National Park; National Park ServiceClose up of a ranger kneeling and holding a machete; circa 1960's; "Wilderness Ranger Erwin Winter".
Two men standing by vehicleEverglades National Park; National Park ServiceClose up of two men by vehicle; man on left holding metal blade; "Near N. Key Largo croc. nest site. Dr. Craighead, R. Klukas."