The auction house Swann Galleries is selling the yoke from Howard Hughes' XF-11 plane in September:
http://swanngalleriesinc.blogspot.com/2 ... in_20.html

More on the XF-11 and its crash:
http://en.wikipedia.org/wiki/Hughes_XF-11
http://www.check-six.com/Crash_Sites/XF ... h_site.htm

They're also selling some other memorabilia, including Hughes' rescuer's account of the crash and some photos.