Digest>Jul/Aug 2022
Photo Caption:
Charles E. Hellwig (right) looks on while one of his crew puts a match to the old incandescent oil vapor light. They are both standing inside the first order Fresnel lens, whose prisms you can barely make out overhead. (Courtesy of The Huntington Library) Back to the edition of: Jul/Aug 2022
Story:
Point Conception Light’s Shocking History
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