Complex sentence: In 1962, he was the European junior individual showjumping champion and he wrote the equestrian sport books, "Reins in Our Hands" (1966) and "Take Off" (1974).
Split into simpler sentences: In 1962, he was the European junior individual showjumping champion. He is the author of "Reins in Our Hands" (1966) and "Take Off" (1974).