Oliver Larch’s Disappearance (sources)
- Strangest Of All, by Frank Edwards, 1991 USA [first printing 1956]. ISBN: 0-8216-2504-7. "The Disappearance of Oliver Larch," Pgs. 119-121.
- "Charles Ashmore's Trail," page in The Ambrose Bierce Project, edited by Craig A. Warren, website viewed August 10, 2014. Online at: http://www.ambrosebierce.org/ashmore.htm
- "What Happened to Oliver Lerch?", by Joseph Rosenberger, article in FATE Magazine, September 1950, USA. Pgs. 28-31