http://nbhaa.com/indexBowden.html
This link is to the National bicycle Historical Association of America's page about the Bowden Spacelander.
It includes a reprint of an article from a 1985 Cyclist magazine.
http://nbhaa.com/indexBowden.html
This link was posted at Mopedarmy.com, after someone posted this* link about a 1961 Prototype Bowden on Ebay.
*
http://cgi.ebay.com/1961-Bowden-600-...QQcmdZViewItem