"[6] In 1929, she completed a climb of the Aiguille du Grépon with French climber Alice Damesme.

This achievement by two women led mountaineer Étienne Bruhl to complain "The Grépon has disappeared.

[7] On September 3, 1930, she climbed the most difficult route on the Finsteraarhorn, the north-east face, with guides A. and F. Rubi.

The only membership requirement was climbing all 48 four thousand foot peaks of the White Mountains of New Hampshire.

They were the first to climb all of those peaks during the winter, completing the quest with their ascent of Mount Jefferson on December 31, 1960.

[8] She wrote an essay titled Manless Alpine Climbing: The First Woman to Scale the Grépon, the Matterhorn and Other Famous Peaks Without Masculine Support, which was published by the National Geographic Society in 1934.

She went on to say, "I did realize that if women were really to lead, that is, to take the entire responsibility for the climb, there couldn't be any man at all in the party."

The Robert and Miriam Underhill Award is given annually by the American Alpine Club "to a person who, in the opinion of the selection committee, has demonstrated the highest level of skill in the mountaineering arts and who, through the application of this skill, courage, and perseverance, has achieved outstanding success in the various fields of mountaineering endeavor.