Leigh Brown (1939 - 1998) produced the Jean Shepherd Show, and co-owned Staggerwing Productions. She married Jean Shepherd, her second husband, in 1977. Leigh Brown rode professionally, and was a member of the Professional Horseman's Association. She wrote one novel, as far as I am aware, Show Gypsies. This is a funny and accurate portrayal of life on the American A Circuit, and is aimed at adults. The book is much loved by those who have read it, and it seems ripe for republishing.
Finding the book:not published in the UK; the book is scarce and expensive in the USA
Diane Gallagher, with her trainer Dave MacKenzie, decides to go for a horse show career. Based in the world of the American A circuit, in the 1970s, with “hard work, hard drinking and endless travelling,” Diane aims for the United States Equestrian team.