rexresearch.com Alchemy Index I Alchemy Index II Essentia ( 1980-1984 ) Volume 1 Spring 1980 Volume 1 Summer - Fall 1980 Volume 1 Winter 1980 Volume 2 Spring 1981 Volume 2 Summer 1981 Volume 2 Fall 1981 Volume 2 Winter 1981 Volume 3 Spring 1982 Volume 3 Summer 1982 Volume 3 Fall 1982 Volume 3 Winter 1982 Volume 4 Spring 1983 Volume 4 Summer 1983 Volume 5 Fall 1983 Volume 5 Winter 1983 - Spring 1984