Western Ontario and the American Frontier. By Fred Landon. (The Relations of Canada and the United States, a series of studies prepared under the direction of the Carnegie Endowment for International Peace, Division of Economics and History; J. T. Shotwell, director.) Toronto: Ryerson Press; New Haven: Yale University Press. 1941. Pp. xviii, 305. ($3.50) - The Crisis of 1830-1842 in Canadian-American Relations. By Albert B. Corey. (The Relations of Canada and the United States, a series of studies prepared under the direction of the Carnegie Endowment for International Peace, Division of Economics and History; J. T. Shotwell, director.) Toronto: Ryerson Press; New Haven: Yale University Press. 1941. Pp. xviii, 203. ($3.25)