From M. Dripps, Map Publisher, New York:
"I will avail myself of Captain Glazier's discovery by showing the True Source of the Mississippi on future editions of my maps of the United States."
From George H. Benedict & Co., Map, Wood and Photo-Engravers, Chicago:
"Lake Glazier is now acknowledged to be the True Source of the Mississippi, and in the course of time will appear as such on all maps."
From John S. Kendall, President of the National School Furnishing Company of Chicago:
"Chicago, October 6, 1887.