Ancestry.com. Lights and shades of missionary life [database on-line]. Provo, UT: Ancestry.com Operations Inc, 2005.Original data: Pitezel, John H.,. Lights and shades of missionary life : containing travels, sketches, incidents, and missionary efforts, during nine years spent in the region of Lake Superior. Cincinnati: Printed at the Western Book Concern for the author, 1859.