r. m. barnett

I was browsing in a used bookstore and came across two booklets by R.M. Barnett on different aspects of Judo. Each of these booklets were priced at $30 a piece which is a little high for about 80 pages. I wrote the author's name down so that I could do a book search online but I have found no information. Does anyone know anything about R.M.Barnett and his books on Judo? One of the books had a copy right of 1972.

I can't find anything on a "R.M. Barnett" that's related to judo. However, I was able to find a "P.M. Barnett" who, from what I can find, authored two books on judo. One was titled, "Barnett's Judo Groundplay to Win" and the other, "Barnett's Judo to Win."

Sources:

http://www.judoamerica.com/coachingcorner/readings.shtml
http://www.tarmans.com/?page=shop/flypage&product_id=15481
http://www.bstkd.com/judorev/A.htm
http://www.judo-educazione.it/Judo/bibliografia.html

It is the same person. I took a pic with my phone and it says R.M. so I guess one print has the author misprinted. I noticed these sites list the booklets for even more.