Haven't seen one, but there was an excellent, illustrated book by a former KG200 member, which might still be around. I got my copy back in 1981, when it was first published in English, having originally been in German, published in 1979 .
Here's the details:-
KG 200; The True Story.
By P.W. Stahl.
Published in 1981 by Jane's Publishing Company Ltd, 238 City Road, London EC1V 2PU .
(No ISBN number shown)
Originally published 1979, by Motorbuch-Verlag, Stuttgart, as 'Geheimgeschwader KG200; die Wahrheit nach uber 30 Jahren'.
Hope this might help a bit.