Alan Cressler:
Acer grandidentatum, Garden Canyon, Huachuca Mountains, Fort Huachuca, U.S. Army, Cochise County, Arizona 2
Alan Cressler:
Acer grandidentatum, Garden Canyon, Huachuca Mountains, Fort Huachuca, U.S. Army, Cochise County, Arizona 3
Alan Cressler:
Agave palmeri, Sarah Deming Canyon, Chiricahua Mountains, Chiricahua National Monument, Cochise County, Arizona 1
Alan Cressler:
Agave parryi, Heart of Rocks, Chiricahua Mountains, Chiricahua National Monument, Cochise County, Arizona 1
Alan Cressler:
Allionia incarnata var. villosa, King Canyon, Saguaro National Park, Tucson Mountains Section, Pima County, Arizona 1
Alan Cressler:
Apache Pictographs, Garden Canyon Pictograph Shelter No. 1, Garden Canyon, Huachuca Mountains, Fort Huachuca, U.S. Army, Cochise County, Arizona 1
Alan Cressler:
Apache Pictographs, Garden Canyon Pictograph Shelter No. 1, Garden Canyon, Huachuca Mountains, Fort Huachuca, U.S. Army, Cochise County, Arizona 10
Alan Cressler:
Apache Pictographs, Garden Canyon Pictograph Shelter No. 1, Garden Canyon, Huachuca Mountains, Fort Huachuca, U.S. Army, Cochise County, Arizona 11
Alan Cressler:
Apache Pictographs, Garden Canyon Pictograph Shelter No. 1, Garden Canyon, Huachuca Mountains, Fort Huachuca, U.S. Army, Cochise County, Arizona 2
Alan Cressler:
Apache Pictographs, Garden Canyon Pictograph Shelter No. 1, Garden Canyon, Huachuca Mountains, Fort Huachuca, U.S. Army, Cochise County, Arizona 3
Alan Cressler:
Apache Pictographs, Garden Canyon Pictograph Shelter No. 1, Garden Canyon, Huachuca Mountains, Fort Huachuca, U.S. Army, Cochise County, Arizona 4
Alan Cressler:
Apache Pictographs, Garden Canyon Pictograph Shelter No. 1, Garden Canyon, Huachuca Mountains, Fort Huachuca, U.S. Army, Cochise County, Arizona 5
Alan Cressler:
Apache Pictographs, Garden Canyon Pictograph Shelter No. 1, Garden Canyon, Huachuca Mountains, Fort Huachuca, U.S. Army, Cochise County, Arizona 6
Alan Cressler:
Apache Pictographs, Garden Canyon Pictograph Shelter No. 1, Garden Canyon, Huachuca Mountains, Fort Huachuca, U.S. Army, Cochise County, Arizona 7
Alan Cressler:
Apache Pictographs, Garden Canyon Pictograph Shelter No. 1, Garden Canyon, Huachuca Mountains, Fort Huachuca, U.S. Army, Cochise County, Arizona 8
Alan Cressler:
Apache Pictographs, Garden Canyon Pictograph Shelter No. 1, Garden Canyon, Huachuca Mountains, Fort Huachuca, U.S. Army, Cochise County, Arizona 9
Alan Cressler:
Apache Pictographs, Garden Canyon Pictograph Shelter No. 2, Garden Canyon, Huachuca Mountains, Fort Huachuca, U.S. Army, Cochise County, Arizona 1
Alan Cressler:
Argyrochosma limitanea subsp. limitanea, Deadman's Cave, Campo Bonito, Pima County, Arizona 1
Alan Cressler:
Argyrochosma limitanea subsp. limitanea, Deadman's Cave, Campo Bonito, Pima County, Arizona 2
Alan Cressler:
Austin Hess, Santa Catalina Mountains, Windy Point Vista, Coronado National Forest, Pima County, Arizona 1
Alan Cressler:
Balanced Rock, Heart of Rocks Area, Miocene Age, Upper Strongly Welded Rhyolitic ash-flow tuff, Chiricahua Mountains, Chiricahua National Monument, Cochise County, Arizona 1
Alan Cressler:
Balanced Rock, Heart of Rocks Area, Miocene Age, Upper Strongly Welded Rhyolitic ash-flow tuff, Chiricahua Mountains, Chiricahua National Monument, Cochise County, Arizona 2
Alan Cressler:
Balanced Rock, Heart of Rocks Area, Miocene Age, Upper Strongly Welded Rhyolitic ash-flow tuff, Chiricahua Mountains, Chiricahua National Monument, Cochise County, Arizona 3
Alan Cressler:
Bear Canyon, Pusch Ridge Wilderness, Santa Catalina Mountains, from Seven Cataracts Vista, Coronado National Forest, Pima County, Arizona 1
Alan Cressler:
Bear Canyon, Pusch Ridge Wilderness, Santa Catalina Mountains, from Windy Point Vista, Coronado National Forest, Pima County, Arizona 1
Alan Cressler:
Border, Estados Unidos Mexicanos (Estado de Sonora) and United States of America (Arizona), Quitobaquito Springs, Organ Pipe Cactus National Monument, Pima County, Arizona 2
Alan Cressler:
Border, Estados Unidos Mexicanos (Sonora) and United States of America (Arizona), Organ Pipe Cactus National Monument, Pima County, Arizona 1
Alan Cressler:
Border, Estados Unidos Mexicanos (Sonora) and United States of America (Arizona), Quitobaquito Springs, Organ Pipe Cactus National Monument, Pima County, Arizona 1
Alan Cressler:
Camel's Head, Heart of Rocks, Miocene Age, Upper Strongly Welded Rhyolitic ash-flow tuff, Chiricahua Mountains, Chiricahua National Monument, Cochise County, Arizona 1
Alan Cressler:
Carnegiea gigantea (crested), Martinez Hill, Pima County, Arizona 1
