1939
An Outline Of Nebraska's Industries, George E. Condra
An Outline of the Principal Natural Resources of Nebraska and Their Conservation, George E. Condra
1934
The Relation of Drouth to Water-Use in Nebraska, G. E. Condra
1930
The Conservation of Nebraska's Water Resources, G. E. Condra
1929
Tree Planting and Landscape Beautification in Nebraska, Condra G. E.
1917
The Potash Industry of Nebraska, GEorge E. Condra
1911
Report of the Second Annual Nebraska Conservation and State Development Congress, G. E. Condra, W. G. Whitmore, and W. R. Mellor
1910
Geographical Influences in the Development of Nebraska, George E. Condra
1908
The Sand and Gravel Resources and Industries of Nebraska, George Evart Condra
1907
Opening of the Indian Territory, G. E. Condra
1903
The Coal Measure Bryozoa of Nebraska, George Evart Condra