... weather pattern occasionally movedas far north as Nebraska and the Dakotas. Dust storms in1 935 carried away wheat—half of the crop in Kansas, one-fourth in Oklahoma, and the entire Nebraska planting. ... Canada,opened up the American industrial and agricultural heart-land to oceangoing vessels. A series of canals, dams, and locksallows ships to travel the Great Lakes all the way to Chicago.Other major ... of army doctors, includingMajor James Carroll, Major Jesse W. Lazear, and MajorAristides Agramonte of Havana (a Cuban national who was a member of the U.S. Army Medical Corps), to investigate...