It is not all about books anymore in library world. Therefore one may think about expanding library-related philately on other media-types shown on stamps. The WIRED magazine has a nice gallery on Computers on Stamps. My favorite is the one from Micronesia showing IBM-Founder Thomas J. Watson – from who I don't know whether he is related to Desk Set's Bunny Watson – in front of classical bookstacks. Obviously the Micronesian postal administration should have done some more research because they put a slightly different name on the stamp…