1. Gregory, J. W., The Nature and Origin of Fiords: 452 (1913).
2. A Reconnaissance from Resurrection Bay to the Tana River, Alaska, in 1898;U. S. G. S., 20th Annual Report,1900
3. A Reconnaissance in Southwestern Alaska in 1898;U. S. G. S., 20th Annual Report,1900
4. The Yakutat Bay Region, Alaska;U. S. G. S. Professional Paper,1909