California mission spheres of influence in the Salinas Valley and surrounding vicinities circa 1825.
Map depicting mission spheres of influence in approximately 1825 in the Salinas Valley and surrounding vicinities. Supplemental downloadable August 4, 2017 memorandum regarding the Motivations for Mapping "Spanish Mission Sphere of Influence."
Stetson Engineers Inc.
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"1825 - Mission Spheres of Influence Circa 1825, Salinas Valley and Vicinity [Draft]" (2017). Mission Maps. 4.