16. Traverse Across Kit County : A Traverse Across Kit Carson
county, Colorado, with Notes on Land Use on the Margin of the
Old Dust Bowl, 1939-40 and 1962 17. Rural Areas : Classification
of Rural Settlement Types; South Dakota; North Dakota; Indiana,
n.d. 18. Rural Areas : Status and Change in the rural Midwest--A
Retrospect; Nebraska, Montana, 1952-1960 19. Central Great
Plains : Three Decades of Land classification in the Central
Great Plains; Thirty years of Land Classification in the Central
Great Plains, n.d. 20. Central Great Plains : Validity of Land
classification in the Semi-arid Central Great Plains; Everglades
Project, n.d. 21. Risk of Great Plains : Report of Condition in
the Great Plains; The Great Plains as a Land of Risk: Updating
Major Powell; The Great Plains Experience, With Emphasis on
Risk, 1967 22. Drainage : Drainage of Irrigated Lands; Drainage
of Wet Farm Lands; Drainage in the Imperial Valley; Drainage in
the Red River Valley; Drainage of Agricultural Lands; Irrigation
in Humid Area