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Summit, California. The brakeman opening the retainer valve on a car on the Atchison, Topeka and Santa Fe Railroad between Barstow and San Bernardino, California. From here to San Bernardino is one long downgrade of more than 2700 feet. Sourced from the Library of Congress.

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Summit, California. The brakeman opening the retainer valve on a car on the Atchison, Topeka and Santa Fe Railroad between Barstow and San Bernardino, California. From here to San Bernardino is one long downgrade of more than 2700 feet. Sourced from the Library of Congress.

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