[WWI] 1/6 German two seater

[Stephen Auslender]

For once I will try to make my post short and totally on topic.
I need the plans of a German two seater observation plane that I will make 
in 1/6 scale. I will make about 70% of it for a display.
I need to know the inner structure as well as the outer shape.
Where can I find this info?
Perhaps a 3/4 cutaway view of the plane showing the interior?
To make this easier any WW1 Two seat German Observation plane will do.
I will gladly buy the book if that is what is called for, or I will repay 
someone if they would send me a xerox copy of an old illustration.
Getting the plans of the plane is not a problem, it is the cutaway showing 
the inner structure of the fuselage that escapes me. WW2 cutaways are quite 
common but WW1 views are hard to find.
Thanks,
Stephen