We would like to thank our agent, Daphne Hart of the Helen Heller Agency, for her cheerful professionalism, editor Pat Kennedy for her care and patience, copy editor Heather Sangster for her attention to detail, and Paul Cherry for fact-checking support. In the new edition, we are grateful to Elizabeth Kribs and Linda Pruessen for bringing the project back to life. Peter Edwards would also like to thank Pauline and Amund Hanson for helping him explore the tunnels of Moose Jaw and the south Saskatchewan caves of The Sundance Kid and other outlaws.