Here's a query that only Jon Racherbaumer may be able to answer.
I first read about Robert Walker in the March 1973 issue "Kabbala" (the reprints published by Danny Korem) - a fifteen year old consumed with a passion for the pasteboards.
Whatever happened to him? He'd only be in his late forties by now. I presume that he's no longer involved in magic.
From issue #21 of "Sticks & Stones":
"Bob Walker is finishing two books: TURNING TRICKS and TRICKS FROM THE TREE"
I know that TRICKS FROM THE TREE was released as it was listed in catalogs released by Micky Hades International over the years.
TURNING TRICKS was also mentioned in WALKER'S HYPER-TWIST manuscript:
"His efforts are catalogued in his gigantic CRUX manuscript. An abridged version of this title will appear under the title, TURNING TRICKS, in the near future."
I've never seen TURNING TRICKS listed anywhere - was it ever released?