5. Foundation's Edge: 1st edition / 1st printing with gutter code "M39" September 1982.


6. Foundation and Earth:1st edition / 1st printing. Gutter "BB27" July 1986.


7. Prelude to Foundation: 1st edition / 1st printing


8. Forward the Foundation: 1st edition / 1st printing. Although the numberline starts with a "2" this is the first trade edition. Doubleday sold the words "First Edition" and the numbers starting with a "1" to Easton Press for their planned deluxe signed edition, but Mr. Asimov became ill and could not sign that edition.