As usual, I have been fortunate in having so many kind people help me in bringing this edition up to date: Jim Bennett, Jeff Bradley, Karen Garthwait, David Giblin, Tim Graham, Tim Hauck, Lyanda Lynn Haupt, Caitlin LaBar, Adam Leache, Katherine Maslenikov, Mark Milligan, Mary Moran, Judy Parrish, Dennis Paulson, Lori Rome, Larry St. Clair, John Spence, and Chris Wonderly.
—David B. Williams