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Long before the hydration pack, there was the Sierra Club cup. Generations of Sierra Club hikers and backpackers kept these metal cups hooked to their belts, ready for dipping into a cool mountain stream. In his famous 1971 profile of David Brower, John McPhee wrote that "In various wildernesses with Brower I had never seen him eat or drink from anything else. In the past, in the High Sierra, he had on occasion rubbed pennyroyal-mint leaves over the embossed letters in the bottom of his cup and added snow and whiskey for a kind of high-altitude julep." 

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