Altre fonti riportano come elevazione i 2.763 m: Harris (2005), p. 193. (EN) S.L. Harris, Lassen Peak, in Fire Mountains of the West: The Cascade and Mono Lake Volcanoes, 3ª ed., Missoula, Mountain Press Publishing Company, 2005, ISBN0-87842-511-X.
Harris (2005), p. 179. (EN) S.L. Harris, Lassen Peak, in Fire Mountains of the West: The Cascade and Mono Lake Volcanoes, 3ª ed., Missoula, Mountain Press Publishing Company, 2005, ISBN0-87842-511-X.
Harris (2005), p. 193. (EN) S.L. Harris, Lassen Peak, in Fire Mountains of the West: The Cascade and Mono Lake Volcanoes, 3ª ed., Missoula, Mountain Press Publishing Company, 2005, ISBN0-87842-511-X.
Harris (2005), p. 194. (EN) S.L. Harris, Lassen Peak, in Fire Mountains of the West: The Cascade and Mono Lake Volcanoes, 3ª ed., Missoula, Mountain Press Publishing Company, 2005, ISBN0-87842-511-X.
Harris (2005), p. 195. (EN) S.L. Harris, Lassen Peak, in Fire Mountains of the West: The Cascade and Mono Lake Volcanoes, 3ª ed., Missoula, Mountain Press Publishing Company, 2005, ISBN0-87842-511-X.
Harris (2005), pp. 193–194. (EN) S.L. Harris, Lassen Peak, in Fire Mountains of the West: The Cascade and Mono Lake Volcanoes, 3ª ed., Missoula, Mountain Press Publishing Company, 2005, ISBN0-87842-511-X.
Harris (2005), p. 397. (EN) S.L. Harris, Lassen Peak, in Fire Mountains of the West: The Cascade and Mono Lake Volcanoes, 3ª ed., Missoula, Mountain Press Publishing Company, 2005, ISBN0-87842-511-X.
(EN) Mount Bachelor Volcanic Chain, Oregon, su USGS, 4 giugno 2010. URL consultato il 1º agosto 2021 (archiviato dall'url originale il 9 gennaio 2009).