[1]Hague, Arnold, Early Tertiary Volcanoes of the Absaroka Range: Geol.
Soc. Wash., Presidential Address, 1899, p. 4.
[2]Holmes, W. H., Twelfth Ann. Rept. U. S. Geol. and Geogr. Surv. Terr.,
1878 (1883) p. 48.
[3]May be purchased by personal application at the information office in
the park, at Mammoth Hot Springs, but that office can not fill mail
orders.