This detail page shows Corsage, which contains an informal interview with Rex Stout, as well as Bitter End, the final Rex Stout story, and other items.  This is one of the 276 hardcover editions published.

Corsage: A Bouquet of Rex Stout and Nero Wolfe (1977):

• The price ($13.50) is on the top of the front flap of the dustjacket.
• The copyright page clearly states "First Edition".
• It is number 213 out of the 276 published.