Title:
'Pine-Clad Hills Forming the Rim of the Valley of Mexico, 8,000 Feet Elevation Above Sea-Level', 191 Creator: Unknown.
Caption:
'Pine-Clad Hills Forming the Rim of the Valley of Mexico, 8,000 Feet Elevation Above Sea-Level', 1919. From "Mexico", by C. Reginald Enock, F.R.G.S. [Charles Scribner's Sons, New York, 1919]