Dimitris,
Kevin Ingraham here. The book sold out very fast and is only available in used book stores and usually at inflated prices.
I recently started writing its replacement and have a publisher lined up. If you must have the old book, I know of a store in Kingston, Ontario, Canada with one. (the look on the clerk's face when I ID'ed myself as the author was worth the drive up there 8>)
Simply, there is so much new information available now and from better, more primary sources than I had back in the early '90s, and some of it inspired by my book, that I can't re-release the original edition. There are few errors in the old book and most of those are quite minor; it's just that there is so much newer info now, to say nothing of newer medals. Plus, I was an amateur at the time and I'm now a couple courses away from a history degree and am now, let's say, professionaly trained.
There's a few folk on this forum I'll be reaching out to, and I'm looking forward to participating in this new (to me) club.