From Earth to Heaven: Seventeen Essays on Science

Notes

The 17 containing essays were first published in seventeen consecutive months in The Magazine of Fantasy and Science Fiction from February 1965 until June 1966.

Gutter Code H37 page 208 shows a printing date of early Sept. 1966. The book is in three parts (Part I), (Part II), and (Part III) With 17 named chapters.
From the Copyright Page: "First Edition"