TY  - RPRT
TI  - Guidebook of the western United States: Part C - The Santa Fe route, with a side trip to Grand Canyon of the Colorado
AU  - Nelson Horatio Darton
PY  - 1916
DO  - 10.3133/b613
UR  - https://pubs.usgs.gov/publication/b613
ID  - b613
ER  -