""Camping Out Days At Putnam Hall Or The Secret Of The Old Mill"" is a novel written by Arthur M. Winfield. The story revolves around a group of young boys who attend Putnam Hall, a boarding school located in New York. The boys decide to spend their summer vacation camping out near an old mill, which is rumored to be haunted. The boys soon find themselves embroiled in a mystery involving the old mill, which they must solve in order to clear the name...