The other design submissions

Hello gents

I am trying to find information (technical data / specifications) and drawings / pictures of the designs submitted to the USAF’s requirement SS-400L in 1951-52., that would be won by Lockheed with their famous Model 400 / YC-130 Hercules transport aircraft design.
The other aircraft / aerospace company’s that submitted proposals were General Dynamics (Convair), Boeing, Fairchild and Douglas
Does anyone know of these other design submissions ?

Regards
Pioneer