From Hermetic Press:
By Forces Unseen: The Innovative Card Magic of Ernest Earick Minch, Stephen
Rarely does card magic come along as strikingly original as that found in this book. When it first appeared in 1993, Ernest Earick's name was little known, and some questioned if the ground-breaking sleight-of-hand described could be done deceptively. The answer, of course, was YES, and By Forces Unseen became an underground classic. Out of print for years, copies have been snapped up, fetching prices of hundreds of dollars.