Anthology published by the Sierra Club. Contributors include: Richard M. Leonard; Arnold Wexler; William Siri; Charles Wilts; David Brower; Morgan Harris; May Pridham. Original copyright 1956, this is a seventh printing, 1965.
This cute little booklet collects some technical articles, including extensive testing on the relative strength of ropes, pitons, and expansion bolts.
Paperback book, 85 pages. Contains seven essays and one small section of cartoons. Pretty serious toning to the edges of the cover but interior pages are unaffected and have a nice supple feel.
