You don't need sources. You make up your own katas with techniques you know and use and incorporate moves you want to learn.
So, a card control kata could go like this: Stick a card in the middle of the deck, establish a break above it, shuffle or cut it to the top. Overhand shuffle the card to the bottom and do a transfer cut to bring it back to the top. Perform a double lift to show an indifferent card. Palm the top card and produce it from your pocket. Top change the card, stick the indifferent card in the middle of the deck and use Ed Marlo's misdirection palm to produce the card from the pocket again. And so on and so forth.
It's not difficult to construct your own katas. Just do it.