(From the publisher):
After a stormy night, Lulu and Snow White find an old jar hidden under a fallen tree. Inside is a mysterious letter dating back to 1918. It was sent from one Pony Pal to another. Lulu and her Pony Pals decide to look for clues. Who are the girls who sent the letters? And why did they have to hide notes in an old jar to keep in touch? And what is the strange connection to Mike Lacey? Lulu and the Pony Pals are determined to find out.
Original title: Ponies from the Past
Genre: Fiction→ Children & Young Adult→ Horses