Karen Lee Baker writes (and I think illustrates) children’s picture books. I’ve only found one which is a horse book, but it is a charmer. It’s beautifully illustrated and doesn’t patronise either child or parent.
Finding the book:still in print, and easy to find secondhand both in the UK and USA.
Links and sources
Many thanks to Lisa Catz for the photograph.
Bibliography - horse books only
Greenwillow Books, New York, 1997
A story for younger readers about getting, and caring for, a pony.