The Canadian government’s Digital Collections Program has conserved local histories, and Criddle’s story can be explored at collections.ic.gc.ca/wawanesa/E/people/criddles/criddles.html. Grasshopper outbreaks in the twentieth century are not collated in any coherent manner, although accounts of particular events can be found in A. Gibson’s “The Control of Locusts in Eastern Canada” (Dominion of Canada’s Department of Agriculture Circular No. 5, 1915); H. C. Severin and G. I. Gilbertson’s “Grasshoppers and Their Control” (South Dakota State Agricultural Experiment Station Bulletin No. 172, 1917); W. W. Henderson’s “Crickets and Grasshoppers in Utah” (Utah Agricultural Experiment Station Circular 96, 1931), R. C. Smith’s “An Analysis of 100 Years of Grasshopper Populations in Kansas” (Transactions of the Kansas Academy of Sciences, 57(4), 1954), and C. Wakeland’s, “The High Plains Grasshopper” (USDA Technical Bulletin No. 1167, 1958). The best overall synthesis of grasshopper biology, ecology, and management—including information on Melanoplus sanguinipes and femurrubrum— is unquestionably R.
