This is a vintage paperback book titled The Middle Sister by Miriam E. Mason, a children's story first published in 1947.

Plot: The story follows Sarah Samantha, a middle child who is afraid of almost everything, and her quest to find courage with the help of her Uncle Romeo.

Publisher: This edition was published by Scholastic Book Services in 1969.

Original Price: The cover shows the original price of 50¢.

Themes: The book explores themes of overcoming obstacles and finding inner bravery.