In the late 1800s, California depended on winter. Before refrigeration, the state relied on natural ice cut from frozen ponds in the Sierra Nevada. For a few short weeks each year, men in places like Boca and Truckee harvested blocks up to sixteen inches thick, stacked them forty feet high in sawdust-lined icehouses, and shipped them by rail across the West. That ice kept Comstock Lode miners alive in Virginia City. It preserved California fruit in Pacific Fruit Express railcars bound for eastern markets. It cooled hotels, saloons, and cities during the hottest months. This episode explores the Boston and Alaska ice trade, the railroad’s impact, the rise of Boca, how ice was harvested, and how artificial refrigeration ended one of California’s most important forgotten industries. Before electricity, California ran on winter.

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