Grumbles from the Grave

From Author Wars - https://authorwars.com/publications/grumbles-from-the-grave-300366.html

Overview:

Title: Grumbles from the Grave
Author: Robert A. Heinlein
Year: 1991
Publisher: Del Rey / Ballantine / SFBC
Price: $8.98
Pages: xviii+281+[2]
Binding: Hardcover
Type: Non-fiction
Title Reference: Grumbles from the Grave
Notes:
Date and price from Locus1 Retains the trade edition's number line '9 8 7 6 5 4 3 2 1' on copyright page. "Jacket painting: Michael Whelan" on rear flap, the artwork is also 'signed' The Foreword is not credited but it is written in the first person and she is credited as Editor