Horse & Pony Books:
LAST OF THE WILD STALLIONS
FIRST EDITION WESTMINSTER [USA] 1949
ILLUSTRATED BY BILL WICKHAM
Reprinted in hardback in 1959 by original publishers.
SUMMARY: Ranching/wild horse story. Jeff Bunting hopes to turn the wild stallion Sky High into a good ranch horse.
FIRST EDITION WESTMINSTER [USA] 1956
THE BLUE RUNNER
FIRST EDITION WESTMINSTER [USA] 1960)
SUMMARY: Ranching story. Mike seeks a job on Matt's ranch as a horse breaker and trainer without telling the man that he is actually his son.
JANET LENNON: ADVENTURE AT TWO RIVERS
FIRST EDITION WHITMAN [USA] 1961
ILLUSTRATED BY AL ANDERSON
SUMMARY: Janet goes to visit her cousins on their dude ranch.
A TV tie-in which featured the female singing star Janet Lennon from The Lawrence Welk show. The author wrote other books about Janet but I think this is the only horsy one.
WALT DISNEY'S ANNETTE: MYSTERY AT MEDICINE WHEEL
FIRST EDITION WHITMAN [USA] 1964
ILLUSTRATED BY ROBERT JENNEY, MAXINE McCAFFREY
SUMMARY: TV tie in. A ranch/mystery story based on the character of Annette from the 1950s American TV adventure series Walt Disney Presents Annette. The heroine was played by Disney teen starlet Annette Funicello. Not sure how much horse content as I have not read it. As a bit of extra trivia, Annette Funicello also starred in Disney's The Horsemasters based on the book by Don Stanford
Fireball is the hardest to find of them all and The Blue Runner is quite rare too. Last of the Wild Stallions, although not common, is reasonably easy to find in the USA. Both these two are very hard to find elsewhere however. The Annette and Janet Lennon books are very easy to find in the USA, but can be elusive elsewhere.