An interesting map on several levels. First is that it shows the recently opened San Juan mining district and a system of color coding shows miners what areas are friendly for settling and what areas are banded for the Ute reservation. Also concentric arcs eminate from Ft. Garland in the San Luis Valley, letting you know in 20 mile increments how far you are from rescue from the cavalry, if you are trouble with the natives. A key lists the mining settlements and their population. Also interesting is that Hayden included notations for where they discovered native "Ruins" throughout the four corners area.
Condition is very good. Image size is 9 x 13 (inches).