Agnes Vaille (1890-1925) was born in Denver and educated at Smith College. She was a member of the Colorado Mountain Club, served as Outing Chairman and was an early member of the "14,000 Footers Club." She was the first known woman to make a winter ascent of James Peak in 1923. In addition to mountaineering, Vaille volunteered with the Red Cross in France during the First World War and was appointed secretary of the Denver Chamber of Commerce in 1924. On January 25, 1925, Vaille and two fellow CMC members made their fourth attempt to climb the east face of Longs Peak. She died on the descent. The Agnes Vaille Shelter was built on Longs Peak and Agnes Vaille Falls near Buena Vista, Colorado, was named for her.
All photographs are from the Agnes Vaille Scrapbooks, courtesy of the Colorado Mountain Club Archives.