Found this guy on ebay selling cd copys of manuals for 109's 190's and JU88's and many other interesting stuff, definatley worth a look for all you high realism flyers.
Theres also modern prints in colour from the period, theres a really nice one of a shwarm of 190's A-4's of JG54 plus many more interestng photos.
The link ...http://search.ebay.co.uk/_W0QQsassZpeter_ewbankQQhtZ-1
Hope this is useful, cheers PP