The Anza expedition of 1775-76 was one of those historic events which took place because of a unique combination of religious political economic and military circumstances.
.borrego springs chamber.com/ juan_bautista _de_anza
Web de Anza provides students and scholars with primary source documents and multimedia resources covering Juan Bautista de Anza's two overland expeditions from the Sonoran desert to northern California leading to the colonization of San Francisco in 1776.
Map of the route Juan Bautista de Anza [born in Sonora MX 1736 - 1788] travelled in 1775-76 from Mexico to today's San Francisco where he founded the settlement of San Francisco. The Presidio and Mission Dolores have museums dedicated to this story
Mission Dolores and the Presidio contain the only 2 grave-sites remaining in the City of San Francisco
mission dolores.org/ old-mission/visitor