"Bunny Brown and His Sister Sue on Grandpa's Farm" by Laura Lee Hope is a children's novel written in the early 20th century. The story features the young siblings Bunny and Sue Brown as they embark on an exciting adventure to their grandfather's farm, following a letter of invitation from him. The book captures their playful and imaginative nature while highlighting themes of family, exploration, and the innocence of childhood. At the start of the tale, Bunny and Sue are introduced in their home as they engage in playful antics, including Bunny's imaginative role-playing as a fire engine driver with his dog, Splash. The story quickly shifts to the arrival of a letter from their grandfather, inviting them to spend the summer with him on the farm. This news fills them with joy and anticipation. The opening chapters feature humorous interactions among the family, foreshadowing the adventures and mischief that Bunny and Sue are sure to encounter during their journey to Grandpa's farm, as well as the search for his lost horses, believed to have been taken by Gypsies. (This is an automatically generated summary.)