Thank you Tophe, Jeffry, and Alex for your kind words.  I'm glad you liked them.    
Those were two planes I worked on for quite some time in between work, going to my sons' ballgames, life, etc.  The L-133 was the first one I did, followed by the XB-51.  I hate to tell you how long the L-133 took.  It was my first 3D aircraft, and presented a few "teething problems" as I learned how to create a good mesh and then apply texture maps.  I have no personal tie to either plane, other than being fascinated by their respective designs and histories.  I also wondered what they would have looked like had they ever been produced.  Since neither of the two planes are around for anyone to actually see and appreciate, I thought I would start publishing artwork featuring them, followed by other works featuring other planes in the near future.  
Here are a couple I did of the XB-51 as if it had been chosen instead of the B-57 Canberra: 

This is called "Sylvia and the Wench", and depicts two B-51 wearing tail codes and nose art of the 13th Bomb Group.  

Here are the same two ships, just at a bit lower altitude, looking as though they're perhaps beginning to turn toward a target.
Here's another I did of the L-133:

I'm working on an F-105D right now:

This is the second version of the fuselage.  I think I'm on the right track and fairly happy with the way it's taking shape.
 
 I haven't decided yet about any markings it will wear once completed.  SEA paint scheme, but undecided regarding any unit markings.
Please let me know what you think and, wherever you are, I hope you're having a great weekend.
-John