Sanger, CA: The Write Thought, (2012). Reprint of this biography of one of Wells Fargo's greatest detectives originally published in 1969. Originally a sheriff in California's Mother Lode country, Hume was among the first to use "scientific detection" in the west - including the use of a laundry mark that helped him track down Black Bart. Photographs. 258 pp. ISBN: 978-1618097033.