Just came across this website. Hundrets of reference pics ... ;)
(https://www.finescalerr.com/smf/proxy.php?request=http%3A%2F%2Fi240.photobucket.com%2Falbums%2Fff181%2FPeter_T1958%2FWestlake%2520Publishing%2520Forum%2FGareduHombourg_zps87e9000a.jpg&hash=5282000e15794a46a87ae36a03a2ff79e0bec457)
http://www.dubtown.de
Enjoy!