Among postcard collectors who specialize in social history, the genre of card you see here is known as a “walker.” “Walkers” are comparatively rare and frequently are real-photo cards.
Challenge received; challenge met. An English doctor involved in a shipwreck arrives in California by happenstance and makes a handsome living by marrying well and daring to live closed to the sharp edge of the law. Wow! These ingredients are the makings of another historic tale seldom found in textbooks.