Bunny Brown and His Sister Sue on Grandpa's Farm is a children's book written by Laura Lee Hope, originally published in 1922. The novel follows the adventures of Bunny Brown and his sister Sue, as they spend the summer with their grandparents on their farm. Bunny and Sue are excited to spend the summer on their grandparent's farm, where they get to help with various chores, play with the farm animals, and explore the surrounding countryside. They also make new friends, including a boy named Charlie Star, who lives nearby and shares their love of adventure. One of the main storylines of the book involves Bunny and Sue's efforts to help their grandparents with the farm work. They gather eggs, feed the animals, and even help with the hay harvest. Along the way, they learn valuable lessons about hard work, responsibility, and the importance of caring for the land and the animals. The children also have several exciting adventures, including a trip to a nearby lake, a visit to a county fair, and a search for a lost calf. They make new discoveries about nature and animals and learn to appreciate the simple pleasures of farm life. Throughout the book, Bunny and Sue demonstrate their curiosity, enthusiasm, and willingness to learn. They also showcase their love for their family and their new friends. Overall, "Bunny Brown and His Sister Sue on Grandpa's Farm" is an engaging and heartwarming story that highlights the joys of family, friendship, and the natural world.