[Recto], uit: Oregon (Klamath County), Crater Lake National Park : topography / R.B. Marshall, chief geographer ; T.G. Gerdine, georgrapher in charge ; topography by Pearson Chapman
[Recto], uit: Oregon (Klamath County), Crater Lake National Park : topography / R.B. Marshall, chief geographer ; T.G. Gerdine, georgrapher in charge ; topography by Pearson Chapman