Jo Packer’s Pepper trilogy are the only books by her I have been able to find.  The covers of the first two, being by Peter Beigel are beautiful, but the contents of the only one I’ve read do not quite match up.  Gymkhana Trek is an adventure-with-ponies.  It’s a good comfort read, but it didn’t leave me longing to read the others in the series.

Finding the books:  No Pony Like Pepper is quite extraordinarily expensive; Pepper Leads the String is very hard to find indeed. Gymkhana Trek is reasonably easy to find, and usually reasonably priced.

No Pony Like Pepper
Herbert Jenkins, 1957, illus Peter Biegel

Many thanks to Sarah Beasley for the picture.

Paul and Grace Davis eventually manage to persuade their father to buy a pony for them.  They think first that
they will stable the pony at the local riding stable, but as they outbid the owner to buy Pepper, that won’t work.
Mr Wasplin, the stable owner, and his star pupil Alicia do not leave Paul and Grace alone even after they have
managed to find somewhere else to keep Pepper.  

Gymkhana Trek
Herbert Jenkins, 1959, illus Peter Biegel

Many thanks to Susan Bourgeau for the picture.

Rachel decides that it is time she and her brother Louis, who have always been used to the best of everything,
learned to rough it.  With their friends Martin and Frances, they make a camping tour of the local gymkhanas.
However, matters get complicated when some men are determined to steal their cart.  They cannot understand
why, but nothing seems to put the men off.

Bibliography - pony books only

Pepper Leads the String
Herbert Jenkins, 1965, illus Juliette Palmer