Statistics for occurrence #1 of “Governor Marmaduke” in entry united-states-of-america-missouri of Harper's Encyclopedia of United States History:

... Governor Marmaduke
One of the central United States, lies west of the Mississippi River, which separates it from Illinois, Kentucky, and Tennessee...
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† This entity has been selected by the automated classifier as the most likely match in this context. It may or may not be the correct match.