I think this is Henry Lozano Jr. rendering of the NAR A, or at least I thought I did. Tony Landis describes it as a Boeing VTOHL proposal. Tony Landis is a writer and archivist at the AFMC History Office. Tony knows his stuff. I’m going to stick to my guns for now, do a little more digging and we’ll see if I wind up moving this post down the road.
NAR A at Astronautix
Image credit: North American Rockwell
Image source: AFMC