The Spellcaster's Bible (1979)
Today it's about time to talk about a very old supplement for Dungeons & Dragons, called "The Spellcaster's Bible".
It was written in 1979. I am not interested at all in the spells-list, which in fact is a mere and boring list. D&D has never been able to properly convey what Magic is and should be, so the only important thing is to be found in the first four pages, namely the Spell point system and Spell power. Concepts and philosophies ahead of their time (by the way there is another obscure method of magic from 1979 but-later)...