Petrick and Jim Kahlert: 7 X PETRICK (Purple)
Paper, 16 pages
7x Petrick (violet)
Image courtesy e-Bay seller Movie-Movies

Comments: Apparently there was a series of the 7x books, each with a different color cover. I think the other colors are: Black, Blue, Green, Orange, Red, and Yellow.
Cover design by Josef Manas, illustrations by Mia and featuring a silhouette by Dai Vernon, printed on the cover.

Contents (numbers are not page numbers):

1 Lipstick Levitation
2 Balloon Penny-Tration
3 The Shrinking Card
4 Strange Change
5 Fail-Safe Bank Night
6 The Voodoo Queen
7 The Magic Hat