This is Billionaires’ Row. Homes here trade for $30 million, $45 million, $71 million. Tech billionaires, oil heirs, Silicon Valley royalty.
And for five years in the 1960s, one of these mansions was secretly the largest private weapons cache ever discovered in America.
The owner was William Thoreson III. Charming, handsome, dangerous. He inherited money, moved to San Francisco, found his way to the Haight. Hosted underground parties at the Pacific Heights mansion. Then the crates started arriving. Automatic weapons. Munitions. Contraband arms purchased across the country.
In 1966 federal agents raided the house and found 70 tons of weapons inside.
He never answered for it.
The family relocated to Fresno while the case worked through court. His behavior grew more erratic. He refused psychiatric help. On June 9, 1970 he told his wife: “If they use truth drugs on me they will never let me out.” He died the next day. His wife was charged in his death, pleaded self defense, and was acquitted.
In 2014, forty four years later, he became the prime suspect in the 1966 disappearance of a U.S. Senator’s daughter. The case remains unsolved.
The Gilded Age built this block. Every era since has added its own story to it.
📍 Pacific Heights, San Francisco
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