T. Bean, D. Crisp, S. Holiday, E. Johnson, S. Lamb, D. Lamm, B. Phillips
USA, Arizona, Coconino County, Colorado Plateau, Kaibab National Forest Tusayan District, Upper Basin, 19 km E of Grand Canyon National Park South Entrance Station on Highway 64, 2 km SE from Highway 64 on Forest Road 310 (Coconino Rim Road) east of interpretive trail near Grandview Lookout Tower.