We just came across this wonderful article in the Chuck Jones Center for Creativity's archives that appeared in the Los Angeles Times the week before the Chuck Jones directed "Dr.Seuss' How the Grinch Stole Christmas!" was to make its debut on CBS (pre-empting "Lassie, no less) on Sunday, December 18, 1966. In the same box with the clipping (it's a wonderful read BTW, click it to enlarge) were these two photographs. The top one shows Chuck Jones working with Boris Karloff during the taping session for the soundtrack and the bottom one is (from left) Ted "Dr. Seuss" Geisel, Les Goldman and Chuck Jones admiring the album covers of Seuss' "Horton Hatches an Egg" and the upcoming "How the Grinch Stole Christmas" (it with cover art by Chuck Jones.)
Of course, what delights us most of all, is the photo in the article of Chuck Jones looking very Grinch-y indeed as Ted Geisel adds his own twist on the Grinch look. Can you imagine how much fun it must've been to have been in the room with those two? Oh, heavens, the mind reels!
The art for the album cover: