Mark Wade has added information to his Encyclopedia Astronautica website
about the history and contenders for the CEV design:
http://www.astronautix.com/craftfam/cev.htm
The final Lockheed design looked like a Soyuz A:
http://www.astronautix.com/graphics/z/zcevlocm.jpg
http://www.astronautix.com/craft/soyuza.htm

Pat