Andrew Kenseller Arthur Harper, Frederick Harte, George Finch, Andrew Kenseller, George McNiff (McNipp) and Alfred Henry Mayo arrived in the Yukon River basin in 1873. Harper and Finch were shown some copper nuggets at Fort Yukon and decided to explore the White River. They prospected at the mouths of the Forty Mile, Sixtymile, and Stewart rivers and spent the winter at the mouth of the White. They ascended it the following spring to search for copper.((Ed and Star Jones, //All That Glitters: The Life and Times of Joe Ladue, Founder of Dawson City.// Whitehorse: Wolf Creek Books. 2005: 57.)) Hart, Kenseller, Finch and Wilkinson [Nickelson?] left Alaska in 1875 not having found anything worthwhile in the country. Their reports discouraged other prospectors from coming into the country.((Francois Xavier Mercier, //Recollections of the Youkon: Memoires from the Years 1868-1885.// Edited by Linda Finn Yarborough. Anchorage: The Alaska Historical Society, 1986: 18, 28.))