If you're only peripherally into Eliot, this won't be of much use, but for those of us who really like or love Eliot, the book serves as a great notebook with annotations of where Eliot might have or did derive his ideas, verses, and lines from. Some poems like Prufrock appear in draft versions, others are unpublished; the majority seem like attempts to find something deep but end up often as sketches. There are still some extremely enjoyable poetry here one way or another, but more than 50% of the book is editor's notes. I found some of them interesting, others not so much.