Short series of the instruction-within-fiction format. The second two books are dominated somewhat by hunting, so perhaps not one for the anti-hunting reader.
Read a review of the series
1) LET'S GO RIDING
ILLUSTRATED BY COLIN DILLY
Reprinted in hardback by original publisher
Reprinted in paperback by Nelson
EDITIONS PICTURED: 1st edition, paperback edition
SUMMARY: Brother and sister John and Jane are taught to ride and look after horses by Mr. Wisp.
PONYMAD RATING: 3 HORSESHOES
2) LET'S GO HUNTING
(ERNEST BENN 1950)
ILLUSTRATED BY GRAHAM SMITH
EDITION PICTURED: 1st edition
SUMMARY: Set after the Second World War. An older John and Jane are re-united with Mr. Wisp when they come back from service. His stables have been bombed and he is now struggling to get it back on its feet in a new location. The brother and sister step in to help him. The instructional element is focused on hunting.
PONYMAD RATING: 4 HORSESHOES
1) LET'S MEET AGAIN
((ERNEST BENN 1952)
ILLUSTRATED BY L. G. ILLINGWORTH
SUMMARY: Mr Flagg hates Mr. Wisp and deliberately turns a horse vicious before passing him onto his rival in the hope of discrediting him or even injuring him. Can Jane and Mr. Wisp cure the badly treated horse? The instructional element leans towards schooling as well as hunting.
PONYMAD RATING: 5 HORSESHOES
The first book was also published as a paperback, but as far as I know the other two were only ever issued as hardbacks. All of the books can be found without too much trouble in the UK and are usually low cost. However they may be a bit harder to find outside the UK and more expensive. The non-fictional books written by the author are easy to find. A word of warning about the paperback edition: that particular edition of Nelson paperbacks tended to be poorly bound and thus pages are often loose. I would recommend paying more for the hardback edition.