On 22 December 1954, Leigh Ortenburger and Bill Buckingham became the first to reach the summit of Mount Williamson (4,383 m) in the California Sierra Nevada during the winter.
On 22 December 1954, Leigh Ortenburger and Bill Buckingham became the first to reach the summit of Mount Williamson (4,383 m) in the California Sierra Nevada during the winter.