This was written during the summer of 1956, when John held a summer-employment position at the Ramo-Wooldridge offices located in Los Angeles, California. I found the paper in the home files, it was not on Warfield's resume, because unpublished. This paper, "Intangibles" is not listed in Warfield Special Collections finding aid. The finding aid lists a similar title which is dated a day later. I believe that two separate papers with similar titles were written on two consecutive days and that both of them could be at the GMU library in Box 6 Folder 21, where the other paper, "Invariants in System Design" is listed. (r.w. circa 2008)