Note 48 — Chapter XIII · THE EASTERN ANDES: THE CORDILLERA VILCAPAMPA
Reading edition
See especially A. Penck (Penck and Brückner), Die Alpen im Eiszeitalter, 1909, Vol. 1, p. 6, and I. C. Russell, Glaciers of Mount Rainier, 18th Ann. Rep’t, U. S. Geol. Surv., 1890-97, Sect. 2, pp. 384-385.