I hope you'll get better answers than this, but--in order of convenience--you might try--
http://www.24fightingchickens.com/
http://www.dragon-tsunami.org/Dtimes...hotokanJNE.htm
$75 + postage
http://www.martialsource.com/Unante.htm
$55 + postage
Don't know of anything written since the breakup, but I don't follow it closely anymore either.
Good luck. Maybe you could post your results here when you've done your research...
Don J. Modesto
Ft. Lauderdale, Florida
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http://theaikidodojo.com/