Forgotten Hill Memento: Run Run Little Horse

The Forgotten Hill series is back with short stories. The stories are about memories and secrets of the Forgotten Hill's residents and divided into 2 mementos. The first one is Run Run Little Horse that takes place in April 1888, a story about a boy and his loyal horse. He is going to find a list of items from his dad. Can you help him solve the puzzle and get the items? What truth will he learn?