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Mexico, Chihuahua, 2 km N. Bahuichivo, elev. 1523 m, lat: 27 25' 2.4" long: -108 3' 57.8"

Mexico, Chihuahua, El Limon, elev. 451 m, lat: 27 24' 1.8" long: -108 32' 36.0"

Mexico, Chihuahua, Milpillas, elev. 1250 m, lat: 27 12' 9.7" long: -108 38' 47.3"

Mexico, Chihuahua, km 13 between Puerto Justo and Balleza, elev. 2040 m, lat: 26 51' 35.9" long: -106 7' 9.2"

Mexico, Sonora, Unamichi, elev. 990 m, lat: 30 40' 8.1" long: -109 58' 56.1"

Mexico, Chihuahua, General Trias, elev. 1516 m, lat: 28 25' 5.9" long: -106 25' 55.4"

Mexico, Chihuahua

Mexico, Sonora, Valle de Tacupeto, elev. 416 m, lat: 28 13' 22.8" long: -109 19' 5.6"

Mexico, Chihuahua, Rancho El Jordan, elev. 469 m, lat: 27 23' 16.8" long: -108 32' 39.6"

Mexico, Chihuahua, Coyame, elev. 1270 m, lat: 29 27' 48.2" long: -105 5' 1.2"

Mexico, Chihuahua, El Guamuchilito, elev. 510 m, lat: 27 23' 21.9" long: -108 29' 54.5"

Mexico, Chihuahua, Arenopanuchi, elev. 2222 m, lat: 27 30' 27.1" long: -107 50' 36.2"

Mexico, Chihuahua, Huicorichi, elev. 1500 m, lat: 27 38' 6.5" long: -108 28' 19.0"

Mexico, Chihuahua, Ejido Gorogachi, elev. 730 m, lat: 27 16' 21.1" long: -108 32' 16.4"

Mexico, Sonora, Ejido San Juanico, elev. 9 m, lat: 28 19' 27.5" long: -111 17' 8.1"

Mexico, Sonora, 5 km N of Alamos, lat: 27 3' 55.1"; long: -108 56' 15"

Mexico, Sonora, 36 km E of Bahia Kino, elev. 31 m, lat: 28 53' 49.3" long: -111 26' 45.2"

Mexico, Chihuahua, Cañón del Oso, lat: 31 16' 13" long: -108 42' 56.8"

Mexico, Coahuila, Cueva del Tabaco, elev. 1133 m, lat: 25 33' 54" long: -103 5' 47"

Mexico, Coahuila, Viesca, elev. 1112 m, lat: 25 20' 10.9" long: -102 48' 0.0"

Mexico, Coahuila, Cueva de Tabaco, Sierra Texas, elev. 1133 m, lat: 25 33' 54.0" long: -103 5' 47.0"

Mexico, Coahuila, entre Charcos de Risa y Zona del Silencio, elev. 1091 m, lat: 26 26' 36" long: -103 2' 9.2"

North Dakota, 25-50 miles east Bismark

Colorado, 11 miles south Holyoke

Colorado, 20 miles south and 4 miles west Otis, Mathais Ranch

Colorado, 6 miles north Boulder, Left Hand Canyon

New Mexico, Hobbs

Colorado, Frijole Creek, U.S. highway 160

Colorado, 9 mi. N. Trinidad, U.S. highway 85-87

Colorado, Trinidad, Prospect Point

Colorado, Barela, reservoir 13 mi. ESE. Trinidad

Washington, Ranier National Park, Catarac Creek and Carbon River

Colorado, near Magnolia, Pine Glade School

Colorado, Pawnee Buttes

Colorado, 10 mi. N. Grand Junction, Hunter Mine

Texas, San Angelo

Wyoming, 18 mi. W. Douglas, Little Box Elder Creek

Colorado, Great Sand Dunes National Monument, Mosca Pass Trail, 8300'

Colorado, Sandhills north of Roggen

Colorado, Boulder, University of Colorado Campus

Colorado, 3 miles north Bondad

Colorado, near Valmont

New Mexico, near Pecos, Old Pecos Mission

Nevada, 5 mi N of Goldfield

Idaho, 4 mi. E. Moscow, Robinson Lake

Colorado, E. Boulder

Arizona, N. Rim of Grand Canyon

Arizona, Apache County

Colorado, Along Boulder Creek near Valmont, about 3 mi. E. Boulder

Texas, 14 mi. W. San Marcos