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GSA. Climatological Records of the U. S. Weather Bureau, Fort Snelling/Fort Ripley, Minnesota, January 1820-1858 [except October 1821 through March 1825] (Microfilm). National Archives, Washington, D.C.

 

GSA. Climatological Records of the U. S. Weather Bureau, Lac Qui Parle, Fort Ridgely, Forest City, Red Wing, New Ulm [and others], Minnesota, 1844-1869(Microfilm). National Archives, Washington, D.C.

 

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