First, thanks all for the many great suggestions.
I'm starting to appreciate - like a good recipe - there can be many unique variations to choose from. Hopefully by next weekend, I will be ready to try a mockup or two.
For those interested in some further examples, Jackless (post above) sent some very nice high resolution photos from Samara. They are JPGs each about 400K, so I left them in Jack's zipfile - which he has kindly allowed me to post here for download should you wish.
Here is one of them:
Some of Jack's other shots are from the top, sides, and front - which should help a lot in scaling the dimensions and angles from the photos.
I've now also seen some beautiful recently constructed examples. Plans for the chair were apparently included in the overall plans for the Don M. Stromquist house in Bountiful, UT. (This is for sale? has been sold? or?)
http://www.archutah.com/built/Stromquis ... index.html
Here is a still of the chair from the above site:
I believe these chairs were constructed from the original plans by Mr Geoffrey Fitzwilliam, Designer/Craftsman/Artist. Here is a page from his website showing his work:
Truly a beautiful fine furniture example. Geoffrey's main site URL is:
Also Geoffrey apparently received the OK to make one extra, which he has now on eBay. One you could finish as you wish. If you are looking for a fine furniture example, this is certainly one.
http://cgi.ebay.com/Origami-Chair-built ... 0245061718
From the photos on eBay, its clear Geoffrey took the time to mitre the joint between the arm and the side, even though it was going to be covered by upholstery. No butt joint. A real craftsman. (spline, biscuits, locking mitre, or dowels Geoffrey?)
Another recent example is offered by Korman Woodworks. http://kormanwoodworks.com/
Notice that the interior sides on this one are left wood and the front stretcher has a bit of a prow. At the rear, rather than extending the seat to intersect the floor, there are two plywood legs (I wondered how many people might have tripped over the original extended seat approach :>).
But no 'anti-tip' in front. Another fine furniture example.
Yet I'm looking for something for my Adirondack summer camp - something to make instead of one more Adirondack Chair. (I have wondered, though, if FLLW might have sat in an Adirondack Chair before designing his Origami. There are similarities - like the way the seat was extended to intersect the floor/ground.
I've got on order a few sheets of $30 3/4 A/C - the only 3/4 stuff the local lumberyard that delivers carries. Plus a sheet of 5/8 CDX for mockup. Should have Wednesday or so. Here at my camp, my 'workshop' is outside - and 'fair weather only'. While I have light-duty table saw, bandsaw, surface planer, drill press, belt sander, router, etc. - I have to move them all out from the ex-mower shed. But at least I don't have to worry about dust collection.
In this case, I think I'm going to be very glad I brought along my Festool TS55 and will use it for this project. If you are into woodworking, and have not tried it, it is amazing - and perhaps actually worth Festool's exhorbitant price. Precise absolutely splinter-free plywood cuts, any angle, and beveled too. Looks like we will need all of that for this chair.