Thanks, Bob,
for the vintage
'DEUTSCHLAND' sub model! That is a fine hand-drawn model, and the sheets are actually quite good, if you enlarge and download them onto your desktop. (They can also easily be color-corrected in Photoshop CS).
It is a fascinating historical record at Wikipedia, if you read about the two long voyages of the submarine on the Atlantic back in 1916, during WW I.
However, if you have larger still scans, I would of course also appreciate if you could send them to me, when you have the time. I'll PM you my e-mail address.
Thank you!
All the best,
Bengt in Stockholm