The Call of Isis by Lady Olivia Robertson.  -- Cesara Press, c1973. "I had encapsuled my personal experiences within a framework of ideas in my book The Call of Isis."   Isis of Fellowship: How the FOI was Founded by Lady Olivia Robertson Written and illustrated by the FOI co-founder, Olivia Robertson, this booklet is her personal account of how each aspect of the Fellowship of Isis was created as she experienced it. Newly inspired Goddess Oracles and drawings accompany each of the chapters. This booklet is the sequel to the autobiographical "Call of Isis".