Hello. I happened to come across this thread in a search for Norman Cross. I have a little personal story to share about him and the balsa Model version above.
In 1970, My father, a Industrial and Mechanical engineer, was working as a consulting engineer for Rohr Aircraft company in San Diego, California. At the time, my mother and father started to investigate the idea of building a sailboat. In their search, they found a series of Trimaran plans from Norman Cross and found that he lived not too far away. After contacting Mr. Cross for More information, The two engineers found that they had a lot in common, and Mr Cross invited us to his house for a meet and greet over dinner.
I was 12 years old, and had a strong love of flying. My parents had a small plane, and I was enamored with making model planes. By and by this fact came up and Mr. Cross seemed pleasantly surprised and said that he had built model planes, and that he even had 16mm home movies of it He then insisted that he show them, and proceeded to set up the machine and screen in his living room. I still remember much of the film, showing that very model in the above pictures in various stages of building and then several minutes of it flying. Rubber band powered of course. He distinctly said it was made to test the concept of a full size airliner and that someday it may very well be made. Of course, that peaked my interest even more.
I must have been obviously excited about the model so much that as we were leaving, Mr. Cross handed me a copy of the plans for the model.
Several years later, I finally built the model and flew it several times until it crashed one too many times and was destroyed. Alas, the plans he gave me and that I took extreme care of were destroyed in a fire nearly 20 years ago and I have been looking for a copy ever since, even to the point of contacting his son to see if any had survived his estate, but to no avail.
Last December, the ongoing searches came to fruition. Suddenly, in the Plans section of The Academy of Model Aeronautics, Was a copy of the original plans. I ordered them and the copy was not the best, so I have been working to restore them digitally and will give the restored version back to the AMA.
The plans link is here;
https://plans.modelaircraft.org/product/cross-flying-wing/
Sometimes perseverance pays off.