Regarding brown trout in North America see:
MacCrimmon, H. R., and T. L. Marshall. 1968. World distribution of brown trout, Salmo trutta. Journal of the Fisheries Research Board of Canada 25:2527-2548.
It's a bit dated, but things haven't changed much since. Established populations exist in at least 34 U.S. states and most Canadian provinces.
Al Zale
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