Probably I should - and I certainly will - offer an apology for the fact that I am publishing these books myself. This automatically means that there will be no professional distribution and, hence, some persons who might have wanted to read these books will not have the opportunity. I will mention that I have had quite a few books published over the years but in the present instances I considered that writing these books was a labor of love, overused though that phrase is. I wanted the price to be as low as possible so that no one would be prevented from reading these books because of its cost. Therefore, I decided to publish it myself. Probably there are very few persons who would want to read the books anyway. The choice, or so it seems to me, is to prevent such persons from reading it by its price or by its lack of publicity. I prefer the latter.