Flip Series:
Picture book series for beginning readers.

1) FLIP
(VIKING [USA] 1941)
ILLUSTRATED BY THE AUTHOR
Reprinted in hardback
Reprinted a number of times in paperback by Scholastic/Puffin
It was also published by Viking as part of a 2 in 1 edition along with the book
I'm Tired of Lions
SUMMARY: The colt Flip longs to be able to jump the brook like his mother. If only he had wings!

2) FLIP AND THE COWS
(VIKING [USA] 1942)
ILLUSTRATED BY THE AUTHOR
Reprinted in hardback
Reprinted a number of times in paperback by Scholastic/Puffin
SUMMARY: Will Flip overcome his fear of cows?

3) FLIP AND THE MORNING
(VIKING [USA] 1951)
ILLUSTRATED BY THE AUTHOR
Reprinted in hardback
Reprinted  in paperback by Puffin
SUMMARY: Willie the goat must come up with some way to stop the frisky colt Flip from disturbing his sleep!

Collector's Info:
Easy to find in the USA. Rarer elsewhere, but not impossible to find by any means.

Other Horse & Pony Books:

TUMBLE: THE STORY OF A MUSTANG
(HASTINGS HOUSE [USA] 1950)
ILLUSTRATED BY THE AUTHOR
Reprinted in paperback by Scholastic.
SUMMARY: Younger reader's story book. Tumble is a wild mustang. He is caught for the rodeo but longs to be free again. Will he achieve his dream?

Collector's Info:
Easy to find in the USA. Copies can sometimes also be found in the UK.

Short Story Collections Edited by the Author:

PALOMINO AND OTHER STORIES
(WORLD [USA] 1950)
ILLUSTRATED BY THE AUTHOR
SUMMARY: Collection of 14 horse stories by various authors edited and illustrated by the Wesley Dennis. Authors include, amongst many others,  Will James, Thomas C. Hinkle and Elisa Bialk.
(See American Short Story Collections section for full listing of stories)

Collector's Info:
Fairly easy to find in the USA. Rarer elsewhere.