Just a head's up -- this cookbook is very collectible, and always a good find for eBay (or for your personal collection).
It is known as the Betty Crocker Pie Cover Cookbook because of the pie chart diagram on the cover. This book is 1972, and was made with a Sears tie-in (even more collectible).
This book (eBay Item number: 360117936888) is currently at $49.99 with bidding still open. I'll let you know how it does!
Update 12/30/08 -- book sold for $59!