I've uploaded pictures of Joachim Groeger's MF3D camera at:

http://tech.ph.groups.yahoo.com/group/MF3D-group/photos/browse/2252?c=

Joachim was the one who had personally worked with Franke and Heidecke
as a designer. He had brought a very unique MF3D camera to the NSa
convention he had modified himself using Hasselblad and Voightlander
parts. He'd also made a folding viewer and special clips to keep
cardboard mounts closed and for support.

This picture was from the NSA MF3D meeting.

Sam