"Among the members of the party which crossed the Cascades to Fort Colville, under the command of Lieutenant Johnson, of the famous Wilkes Exploring Expedition of 1841, was Dr. Charles Pickering… In 1848 he published The Races of Man and Their Geographical Distribution. In this... he gives an interesting account of the journey to Fort Colville... This is contributed in the hope that it may be of value to students of Washington history."
