Ken W. Martin,
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An 1844 Choctaw Nation map showing the Boggy creeks may possibly be found in the Delaware collection at the Kansas State Archives.
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from MARK of HERITAGE by Muriel H. Wright
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Delaware Mount has been referred to as the high dividing ridge between the headwaters of the Muddy Boggy and Clear Boggy creeks, and the valleys of Sandy Creek and the Canadian River. ..Through the Choctaw Nation, Black Beaver's band of Delaware were permitted to settle in this area by the Choctaw National Council in 1844. ..Later the natural phenomena became a landmark for the forty-niners traveling over the California Road to the gold fields of California. ..This "Mount" extended from several miles south of Ada, Oklahoma, northeast to the Canadian River. At the top of this plateau travelers exclaimed on the find view of the headwaters of Muddy and Clear Boggy creeks.
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http://www.forttours.com/pages/mohdelaware.asp