Thanks Mark, bfg, and cobweb.
Agreed about the unfair advantage of a larger ball over a smaller one if NRA scoring was used. I will go with the thoughts that the NMLRA has used this method from the get go. However, I do wonder if NRA scoring was used at Portsmouth back in February of 1931 and at other pre NMLRA matches, such as the one held at Aurora, Portage County, Ohio on Nov. 8, 1930?
Regardless, this may never be known for sure, but the idea of the current scoring method of the NMLRA is a fair scoring method for all, and most likely born out of previous shoots prior to the NMLRA.
Again, my thanks to all of you.