I have given many talks on the history of California spirituality based on my book The Visionary State. Probably the best was the following lecture, which I gave on March 15 at the Philosophical Research Society, which was founded by the great Angeleno esotericist Manly P. Hall. It focuses on the esoteric and magickal currents that manifested themselves in California, and dives beneath the history to get at the furtive spirit of the place. The recording is a little spotty at the very beginning, but then you should be good to go. Introduction made by the scintillating Maja D’Aoust. Check it.