Wood Frame Backpack

Just doing a little research:

The history:
http://patentpending.blogs.com/patent_pending_blog/2005/01/the_trapper_nel.html

Info found hear with a cool photo of a Segen Pax Backpack:
http://www.backpackinglight.com/cgi-bin/backpackinglight/forums/thread_display.html?forum_thread_id=30835

How to make your own:
http://www.motherearthnews.com/do-it-yourself/make-a-backpack.aspx