"Planned and conducted by a subcommittee of the Agricultural Committee of the Greater Des Moines Chamber of Commerce."
"Published under the auspices of the Agricultural Committee of the Greater Des Moines Chamber of Commerce with the cooperation of the Iowa State University Center for Agricultural and Economic Development."
The Grain Growers' record, 1906 to 1943 : an abridged history of Grain Growers' Grain Company, 1906 to 1917, Alberta Farmers Co-operative Elevator Company, 1913 to 1917 [and] United Grain Growers Limited, 1917 to 1943
Papers of a conference sponsored by the University of Manitoba Faculty of Agriculture and Home Economics and the Iowa State University Center for Agricultural and Economic Development
The diffusion of Grain-marketing cooperatives in southern Manitoba from 1906 to 1960, with particular emphasis on the periods 1912-17 and 1925-40 / : by Geffrey E. Katz
Tradition and transition : extension education for the farm unit in a changing society : a study of all agricultural extension services in Alberta with new directions charted to 1980
