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In page One Hundred and Two River:

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*Author Homer Croy who chronicled life in Nodaway County speculated that it had something to do with Mormon Trail migration of 1847 in which the river was 102 miles from its previous camp.[1] These coordinates do not fit the coordinates for Mount Pisgah (Iowa) which is less than 100 miles from the river although they would be close in relation to the distance from Hopkins to Kanesville, Iowa which was the outfitting point for the Mormon Trail. Another version of this story says that Brigham Young told his followers that the river was the 102nd they had crossed since leaving Nauvoo.