Jerry West aka Andrew Svenson (1910-1975)

American author born in New Jersey in 1910. Real name Andrew Svenson, though perhaps best known by the pen name of Jerry West, which he used to write his most popular and well-loved series: that of the 'Happy Hollisters.' This is a long running adventure series which has quite a cult following and it's own fan site. Some of the stories in the series are pony related, although the full series is actually a mystery/adventure series.

As well as the Hollisters series he also wrote other adventure series for children, including the Brett King and the Tolliver Family series. This latter series was written under another pseudonym (Alan Scott) and included one pony-related title.

The author in fact worked under a number of other pseudonyms with which he was to share with other authors as a staff writer (ghost writer) for the highly popular Stratmeyer Syndicate publishing company on such classic series as the Hardy Boys and Bobbsey Twins.

He advocated a 'formula' for writing exciting children's books in which the first page should plunge the reader into excitement and danger and that each chapter should end on a suspenseful note or 'cliff-hanger.'

The excellent fan site I have provided a link to gives a lot more information about the author and his works

Horse & Pony Books in the Happy Hollisters series:
The following 3 books are part of longer generally non-pony series. The Happy Hollisters is a well-loved series about 5 children and their dog and cat, and the adventures they have and mysteries they solve. There are over 30 books in the full series of which I think 3 are pony related. There may be more horse related titles in the series - if you know of any please let me know.

For the full series please click here

THE HAPPY HOLLISTERS AT MYSTERY MOUNTAIN
(DOUBLEDAY/GARDEN CITY [USA] 1954)
ILLUSTRATED BY HELEN S. HAMILTON
Reprinted in hardback in 1960. I think this may have been a Book Club edition.
SUMMARY: Book 5 in the series. The Hollister children are invited to spend a holiday at a dude ranch, where they once again get involved in a mystery.

THE HAPPY HOLLISTERS AT PONY HILL FARM
(DOUBLEDAY/GARDEN CITY [USA] 1956)
ILLUSTRATED BY HELEN S. HAMILTON
(1st UK edition WORLD 1956)
This was reprinted in the UK by World with the same illustrations.
SUMMARY: Book 10 or 11 in series (the book has been numbered as both) although a chronological study of events in the book suggest it is in fact no. 11. The Hollister children investigate the mystery of a pony that appears from nowhere.

HAPPY HOLLISTERS AND THE GHOST HORSE MYSTERY
(DOUBLEDAY/GARDEN CITY [USA] 1965)
ILLUSTRATED BY HELEN S. HAMILTON
SUMMARY: Book 29 in the series.

Collector's Info:
Pony Hill Farm is the easiest one to find in the UK, no doubt as it was the only one with a British edition. All the series are fairly easy to find in the USA.

Horse & Pony Books as Alan Stone:

THE TOLLIVERS AND THE MYSTERY OF THE LOST PONY
(WORLD [USA] 1967)
ILLUSTRATED BY MEL BOLDEN
Not sure if this was also published in the UK by World. Confirmation n
SUMMARY: Part of the
Tolliver Family trilogy, which is similar to the Hollisters except that the family are African-American rather than white. A pony-themed mystery.

Collector's Info:
Hard to find outside America. In the USA it is slightly harder to find than the Hollisters books but usually fairly cheap.