I painted a depiction last year of one of Wintgens' Halberstadt DII victories.
http://www.russellsmithart.com/Small%20pag...tticeTails.html
As a result of my research on this project I've got some information that nmay be of use to you - nothing groundbreaking, it can all be found in the books. However, if there is any informationin particular that you are searching for I'll be glad to look through what I have. In the meantime, in addition to "Aviation Awards of Imperial Germany" I would suggest
Sharks Among Minnows as a good reference.
Russ