Hey all,
I got an email today from Jan-Anders Lindqvist, a fellow Type 4 fan. Apparently he visited the VW Museum this April and has put together a series of web pages with the pictures he took. He has pictures of the '66 and the '68 prototypes, among others. Check it out at this URL: http://w1.316.telia.com/~u31614134/Wolfstart.html
Tom