"Joseph R. Walker (1798-1876), leading a party of Bonneville's men,
made the first east-to-west crossing of the Sierra Nevada, in 1833.
On the return journey, in 1834, he crossed via the pass that is now
named for him. Walker was a guide on Fremont's third expedition,
1845-46; it was Fremont who named the pass. (Memoirs, vol. 1,
354.) He also named the river and Walker Lake, Nevada. Walker Mountain
was first named on the 1911 Bridgeport 30' map. It is at the
headwaters of the Little Walker River."
- Peter Browning, Place Names of the Sierra Nevada