Stack of Seven Yellow Vintage Books with a Secret!

This stack of seven titles has a wonderful mid-century vibe.  Each book is in good to great condition for its age.  The stack is appropriate for decor or reading.  The largest book in this collection measures 6" x 8.5" and the smallest is 5.5" x 8".  Please DM with questions prior to purchase, and keep reading to learn the secret!  Titles include:

• Getting the Most Out of Life from The Reader's Digest, 1955.
• The Verse By the Side of the Road: The Storyof the Burma-Shave Signs and Jingles by Frank Rowsome, Jr.1965.
• Character Reading for Fun and Popularity by Frederick Meier, 1945.
• The Complete Home Book of Money-Making Ideas by Douglas Lurton, 1954.
• Heloise's Work and Money Savers by Heloise Cruse, 1967.
• The Golden Notebook by Doris Lessing - This is NOT a readable book; this book is hiding a secret compartment!
• Ship of Fools by Katherine Anne Porter, 1962.