Text and photos from an early 20th century journey from Tucson across the desert southwest to Sonoyta and finally to the Gulf of California by William T Hornaday and a party including Dr. Daniel Trembly MacDougal and Godfrey Sykes.
Tags: arizona,carnegie,desert botanical laboratory,history,lava,macdougal,mexico,montezuma head,pinacate,sonoyta,sykes,tucson