You have that Friedrichshafen book I'm looking for quite a while!
Can you recommend it? Do you know where I can get one?
Unfortunately I can't help you out with a cockpit shot of that aircraft.
Will see if there is something in one of the old magazines, but there is not too much hope I find one.
Have you checked out the Windsock Datafile #73?
There are ususally all sorts of detail shots included.
available here:
Windsock Datafile Specials - Aircraft of WWI
and sometimes on ebay...
Cheers
Aquilius