Pidgy's Surprise
This book by Jeanne Mellin is about a girl and her pony.
She loves her pony Pidgy, but wants a horse like the other kids.
When her pony goes missing, she realizes how much she really loves her pony.
It has lots and lots of great pictures!
From Amazon:
Cindy Sawyer, who owned a plucky little pony named Pidgy, dreamed of the beautiful horse she would one day own. Ponies were nice, but a horse would be wonderful.
Cindy's dream soon became an obsession and her parents realized that she was becoming a very unhappy girl.
After a summer full of fun and riding, with Pidgy actually winning a prize at the Country Club Horse Show, a morning came when Pidgy was missing from her stall. Not until she looked into the empty stall did Cindy realize how much she really loved her pony.
Originally published in 1955, this book is written and lavishly illustrated by famed equine illustrator Jeanne Mellin.