Spot the differences in more than 112 picture puzzles themed around the 1950s.Vintage photographs and plenty of '50s fads, fashions, trends, and inventions.The book is divided into 4 levels of increasing difficulty. As the levels get harder, the number of changes increase, and the differences get more subtle.Also, includes '50s movie trivia, and fun facts about TV dinners, '50s architecture, and more!Answer key is found in the back of the book.Spiral bound, 160 pages.The Brain Games Picture Puzzles series was developed to challenge the powers of observation and stimulate the ability to focus and concentrate.