Perspective drawing - book

This is the best book I own on perspective drawing. It is written and illustrated in a wonderfully concise, crystal clear style. The book itself is only four inches across - can just about fit in your back pocket - and loaded with more important information than you'd imagine could be put in a mere 91 pages. Great for easy, quick access. And of course it's out of print! I somehow lucked out a few years ago and picked one up in the discount bin of an art supply store for $7.50 (from $9.95); but check out what they're going for over at Amazon.com now. Wow. Somebody needs to get this book back in print.