Interesting thread mistwalker! My wife and I are just getting into wild edibles, last weekend we collected a bunch of Gambel Oak (White Oak) acorns, but alas, many of them were bad. We are already planning to get some more next fall on the rim. I wish we had walnuts, but I do know of some parks in the Sedona area that have a number of very large Pecan trees. I'll have to put those on the list as well.
Once you start investigating it's amazing how many things you can eat in nature. We are also taking a wild edibles walking tour/class in a couple of weeks at a local arboretum.