[1] He has concentrated much of his rock climbing career on big routes in Yosemite National Park, Squamish, British Columbia as well as the High Sierra.

[3] Royal Robbins, a leading climber of the previous generation, wrote about Croft and his climbing achievements in 2000: "Peter has been my hero for many years, ever since he came blazing out of nowhere with his stunning free solo ascent of Astroman on Washington Column in Yosemite.

Tom Frost and I had made the second ascent of this route, mostly with direct aid in the early sixties.

That it was mastery, and not mere daring was proven by a string of free solos of similar stature, executed to perfection.

[5] Speaking with Peter in the early 2000s at Joshua Tree, he was asked what got him into free solo climbing.