Clover is the 4th book in the “Katy Did Series” In it, we read of Katy's marriage and Clover's experiences in Colorado. In this fourth book of the series the focus shifts to Clover and "little" Phil her brother now twelve. After Phil's serious illness during the winter, Dr. Carr sends him, with Clover to watch over him, to the mountains of Colorado to help him recover his health. Clarence Page (A character from the second book who was a friend of Clover), now a rancher with an English partner, turns out to live nearby.