Visalia Weekly Delta, November 26, 1859:
"The curiosities are the Hot Springs on the opposite side of the [Kern] river from Keyesville [near Isabella], the water of which is almost boiling hot where it comes up through the ground. The spring runs a large sluice head. The taste of the water is very similar to that from the Blue Lick Springs of Kentucky. We were told that during the time of the earthquakes of 1857 the water from this spring was intensely hot, and continued so for some six months after. There was another spring some fourth of a mile distant, which was entirely closed up by the earthquake, and is now dry ground where it once run."
