The first recorded westward crossing through the center of the Sierra Nevada was made by

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The first recorded westward crossing through the center of the Sierra Nevada was made by Joseph Walker in 1833. Jedediah Smith crossed further north in 1827, but not through the center. Tamsen Donner and her husband were part of the ill-fated Donner Party, which attempted to cross the Sierra Nevada in 1846, but they were not the first to do so. Theodore Ebbetts is known for discovering a pass through the Sierra Nevada that is now named after him, but he did not make the first recorded westward crossing through the center of the range.

The First Recorded Westward Crossing Through the Center of the Sierra