Very interesting project
If you need more work or informations about lighthouse all over the world, try this ->
http://www.lightphotos.net/photos/
If you want to see old maps, look here -
Ahnenerbe WideGui or http://www.subsim.com/radioroom/showthread.php?t=232178
"The source" have some old kriegsmarine maps (Wilhelmshaven 1938 for exemple)