GEORGINA BLOOMBERG is the younger daughter of New York City Mayor Michael Bloomberg. An accomplished equestrian, Georgina is on the board of directors of the Equestrian Aid Foundation, the United States Equestrian Foundation, the Hampton Classic Horse Show and both the Bloomberg Family and Bloomberg Sisters Foundations. She is an Equine Welfare Ambassador for the ASPCA, a member of Friends of Finn for the Humane Society of the United States, as well as the chair woman of the HSUS Horse Council. In 2006, she founded the charity The Rider's Closet, which collects used riding clothes for those that are unable to afford them. Now run by Pegasus Therapeutic Riding Center, the program has enabled thousands of riders to stay in the sport and have the proper apparel and equipment. She is a graduate of New York University's Gallatin School of Individualized Study.
CATHERINE HAPKA has published many books for children and young adults. She keeps three horses at her small farm in Pennsylvania.