In what series did one of America's most successful living authors call Frank C. Barnes House haunted?
Frank C. Barnes House:  Author Beverly Cleary called the house "haunted" in her Ramona Quimby series. Beverly Cleary:  One of America's most successful living authors, 91 million copies of her books have been sold worldwide since her first book was published in 1950.
Ramona Quimby series