Collecting IBM Manuals

I was wondering if anyone else collects IBM Manuals. Since the early IBM XT's I have always been impressed with the excellent manuals that IBM produced for their personal computer series computers, and presently have about 20 manuals in my collection.. I have many of these manuals in my family room bookcase on display.. Excellent Binders in a standard Boxed/Sleeve cover.. Always looking for a DOS's that I don't already have.. I currently have in my collection. DOS's 2.00, 2.02, 2.10, 3.00, 3.20, 3.30 and 4.00 .. And even the IBM 3270 Emulator software.. In the early 1980's seem's everyone started making their manuals in the IBM format binders with Boxed Sleeves.. I also have a nice set of 4 manuals for the Packard Bell XT, looks like an IBM manual clone and very nicely done.. Most manuals after this era were just cheap paper bound.. Seems any manuals are just history now, with the advent of the CDROM... Phil..