I have owned this book for quite awhile, and enjoy it for reading about how different things are now than they were then.
An interesting side note being that I grew up not far from Lewistown, and have an uncle that gave me a good bit of his shooting gear before he moved off the ranch. Among that were a bunch of pitch targets that "his uncle who was a trick shooter around Lewistown back in the day" gave him. He then went on to explain that this uncle of his was good... really good and could hit these aerial targets and never missed. So good, in fact, that S&W used to send him guns to test out! Wouldn't you know who that guy turned out to be?? So, if my uncle is telling the truth, I have a handful of targets made by McGivern himself, in the manner described in the book.