Looks like a great project to restore the camera. I restored an old Kodak 2D camera. I didn't try to the bellows, I sent it away to have a new one made. Enjoy.
To put it simple: you can make from plywood a lens plate for the camera and mount a 150mm in it for starters.
150mm is the "standard lens" for 4x5 inch.
If you want longer have a look at a 210mm or a 240mm, but measure the bellows first: min and max extension.
If ou want more wide-angle than the 150 you might look at a 120mm or even a 90mm Super Angulon or Grandagon.
All on new lens plates 'cause...
Goog looking camera, congrads !
Excellent - thanks for the replies - I reckon I've been trying to make it more complicated than it is. :-)
Originally Posted by archphoto
Yes, I'd go with some 180mm Symmar for the start as 16.5cm x 12cm original glass means you can probably adapt your camera to 5x7/13x18 format as well. 180 covers it too. Or whatever similar you manage to get hold of.
I mounted 90/8 Super-Angulon to 5x7 Seneca Improved. Works, without any movements.