J. Harlen Bretz

• The Grand Coulee. American Geographical Society Special Publication No. 15
• Caves of Missouri (Missouri Geological Survey and Water resources, Vol.XXXIX 2nd Series)
• Caves of Missouri (Missouri. Division of Geological Survey and Water Resources. [Reports] 2d series)
• Caves of Missouri Vol, XXXIX, Second Series
• Glaciation of the Puget Sound Region