Everything Knuth has written for TAOCP after Volume 3 (over the last dozen years or so), amounting to all of Volume 4A (published as a ~900-page book) and about

Everything Knuth has written for TAOCP after Volume 3 (over the last dozen years or so), amounting to all of Volume 4A (published as a ~900-page book) and about two-thirds of Volume 4B (yet to be published), is basically available online in draft form (very close to the final published version though of course Knuth being Knuth there may be many very minor changes), from his website, or more conveniently collected here: http://www.cs.utsa.edu/~wagner/knuth/ http://www.cs.utsa.edu/~wagner/knuth/