Arrigo does a fine job reviewing in detail Hitler Turns East. In which we can see Teds efforts in developing and refining the ideas that eventually led to The Dark Valley.
Hitler Turns East was covered here earlier on in some detail. For AARS check the link: https://bigboardgaming.com/hitler-turns-east/
and the wrap up here.
Read Arrigos post here:
http://forwardhq.blogspot.it/2014/04/hitler-turns-east-or-barbarossa-made.html