Sleight of Hand is also quite extensive on this subject. I haven't read through it all yet, but it is pretty thick with card manipulations (not as flourishes, but getting them to do what you want in a trick setting, if that's clear. I don't think it is, but oh well).
P.s. shout out to Steerpike, Craig Browning, and the other guy I forget who, but I followed your ever constant advice about books versus DVDs. I learned more in the first ten pages in the Chinese Tricks section of Sleight of Hand than I have in all of the videos I have downloaded combined