Handbuch der Magie (German book) by Jochen Zmeck Page 47 et seq.
Personal Comment: Really cute trick. While this might not end up in a professional's act I can see this one done at a bar among bar bets and such things. Easy to do, no setup (well openly taking out the Jacks) and a visual effect. Cool stuff. If part of a longer routine this might be worth checking out.