If you don't think that hair is one of the most memorable things about a person, you should really take a look at Whose Hair? ($9) by Christina Christoforou. The book is a fun guessing game that dares you to name the highly recognizable hairstyles of luminaries from Abraham Lincoln to Andy Warhol. I was shocked by just how many I could recognize, and after going through the entire book, I think I can say without a doubt that having a unique hairstyle makes you at least a little more memorable. Can you guess who these styles from the book belong to?