00899cam a22002291 4500 agr24000326 DLC 20260227110944.0 070706s1924 dcuab 000 0 eng agr24000326 DLC DLC DLC S711 .T65 Tolley, H. R. (Howard Ross), 1889-1958. Tractors and horses in the winter wheat belt, Oklahoma, Kansas, Nebraska. By H. R. Tolley ... and W. R. Humphries. Washington, Govt. print off., 1924. 60 p. illus., map, diagrs. 23 cm. United States. Dept. of agriculture. Department bulletin no. 1202 Joint contribution from Bureau of public roads, Bureau of agricultural economics, Bureau of animal industry. Horses. Traction-engines. Humphries, W. R. (Walter Raymond), 1886- joint author. 8887 8887