1. Dr Petty (fourth from right), his fellows, and others at the start of the first annual Dorothy Lake hike in August 1972.
Dr Petty (fourth from right), his fellows, and others at the start of the first annual Dorothy Lake hike in August Louise Nett is second from right, and the author is second from left. Dr Petty is outfitted with a portable liquid oxygen unit, which came in handy as the group ascended to the lake's 12,061-foot elevation. According to Louise Nett, his fishing creel, which carried trout on the way back, at this point contained beer.
David J Pierson Respir Care 2014;59:
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