2/4/1980. The reader is Bill Jarvis.
This is the first instalment of a three part lecture series entitled ‘The Doctrines of Nichiren Daishonin’s Buddhism’. This first part of this first lecture is on ‘The Three Great Secret Laws’, see http://www.nichirenlibrary.org/en/dic/Content/T/130
When Mr Causton talks about ‘Nichiren Shoshu Buddhism’, he is referring to the Buddhism of Nichiren Daishonin as practiced today by SGI (Soka Gakkai International). Since this lecture SGI and the Nichiren Shohu Priesthood have separated and are two different religious organizations. The Priesthood have deviated considerably from Nichiren Daishonin's teachings.
For my project on vol.2 of the Gosho, see https://archive.org/details/wnd2thematicquotes/page/n13/mode/2up
For SGI Vice-President Satoru Izumi’s book: “Guidelines of Faith”, see https://archive.org/details/izumicomplete/page/n87/mode/2up