I downloaded the 6th edition (1995), and since then I've acquired a print copy of the 4th (1985). Using Acrobat, I OCRed the 6th, so that I could do keyword searches, and bookmarked it fully. I also scanned, PDFed, OCRed and bookmarked the 4th; a better job because I controlled everything. I find that when I want to look something up, I invariably start with the 6th though -- its reach extends back to the 70s and 80s equipment that I'm most interested in, and I find it somewhat easier to use. I'd like to find a print copy, though the PDF is so darn easy to use that I probably wouldn't actually thumb through the book. I'd like to have a copy of the 5th (1990), too. N+1 is the right number of Sutherland'ses to have, mos' def'. I also pieced together a Barnett's, but I find it preachy and nowhere as easy to find relevant info as Sutherland's.
Last edited by Charles Wahl; 09-30-11 at 07:33 PM.