At the "International Astrology Days", March 2015, Bangkok Thailand, Michael R. Feist presented his lecture about the history of the different Rules-Book Editions. In the meantime this presentation with more than 40 slides is available as a commented video at Youtube (29 min.)
Historical facts about the important reference book of Uranian Astrology are mentioned and more than 10 different Editions, official, un-official and translated Editions are shown or discussed.
The lecture will inform about three different periods:
1. the early collection of the Rules (1926-1927)
2. the (nearly forgotten) first period of the Rules-Book (1928-1941)
3. the second period we known today.