What Is the Short Story "The Treasure of Lemon Brown" About?

The short story "The Treasure of Lemon Brown" is about a boy named Greg who storms out of his house to avoid his dad and meets a homeless man named Lemon Brown, who shows him his "treasures" of an old harmonica and newspaper clippings. Greg learns not to judge people so quickly through his encounter with Brown, and decides to go home and resolve his conflict with his father. The story was written by Walter Dean Myers, a renowned author of children's books and young adult literature.