- Oustide (US)"Free Solo Rock Climbing and the Climbers Who Have Defined the Sport"June 4, 2022 · by: Alison Osius
- American Alpine Club (US)"Fall on Rock, Climbing Alone and Unroped, Weather-Probably, California, Yosemite Valley, Sentinel Rock"January 2, 1994 · by: AAC
- Independent (GB)"Obituary: Derek Hersey"June 25, 1993 · by: Alison Osius
- The New York Times (US)"Derek Hersey, Climber, Dies at 39 in Cliff Fall"June 2, 1993 · by: Reuters
- Los Angeles Times (US)"Premier Rock Climber Falls to His Death in Yosemite : Accident: Derek Hersey was a free-soloist, using no ropes or equipment. A friend says he may have encountered moisture and slipped on Sentinel Rock"May 31, 1993 · by: DAVID WILLMAN
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