User blog comment:Jimeee/Skyrim 1.9 beta update adds Legendary difficulty and raises level cap (Updated Apr 8th)/@comment-85.240.211.1-20130402202626/@comment-216.161.93.81-20130403130954

I kind of hope they fix it once and for all, so that it works like any other skill book: it only works the first time you read it, no matter how many copies you "find."