Leland Silliman

American author born in New York in 1906. He was much involved in boy's athletics and swimming, and was a swimming coach and camp director in the war years. His children's books were likewise aimed mainly at boys and featuring stereotypical  'boyish' activities such as baseball, American football and camping, etc. He wrote a short horse series of the 'ranching' type which was likewise aimed at boys but no doubt enjoyed by many girls too! As far as I know this was his only foray into equine territory.

Golden Cloud Series:

1) GOLDEN CLOUD: PALOMINO OF SUNSET HILL
(WINSTON [USA] 1950)
ILLUSTRATED BY PERS CROWELL
Reprinted in paperback a number of times by Scholastic
SUMMARY: Whilst working on a ranch Orin reluctantly falls in love with the beautiful palomino mare Golden Cloud - reluctantly because the horse is promised to someone else...

2) GOLDEN CLOUD IN TEXAS
(WINSTON [USA] 1953)
ILLUSTRATED BY PERS CROWELL
SUMMARY: Orin and Golden Cloud set out for the Texas horse fairs.

Collector's Info:
The books are quite easy to find in the USA, with the second one slightly less common. Harder to get hold of elsewhere.