I cant find anything specially about supplying Canadian wheat to the mills
in Minneapolis but vast quantities of Canadian wheat were shipped by rail
through the USA for export from US ports including New York, Boston, Portland
Maine, Philadelphia, Baltimore and Norfolk Virginia.
Similarly US grain travelled by rail and was exported via Canadian ports
such as Montreal, Quebec, St. John and Halifax.
For example, during five crop years (1922-23 to 1926-27) an average of 135
million bushels of Canadian grains annually were exported from US ports against
53 million bushels of American grains were handled through Canadian ports.
