I don't know where travel writers get their urban mythology, but this one is interesting. One out of three ain't bad, since I know there is a lot of interesting history about Nell Shipman - there are some industrious fans and film buffs in Boise working on a documentary about her contributions to film history as we speak.
From Sunset Magazine and CNN.com: "The lakes of northern Idaho -- Coeur d'Alene, Pend Oreille and Priest -- are deep, blue and busy. Scooped out during the Ice Age, the lakes now float yachts and kayaks. On the green shores, towns draw visitors to high-end resorts, restaurants and lakefront bicycle trails.
Each lake has its legend: Native Americans told stories of monsters in Coeur d'Alene Lake; another monster, the Pend Oreille Paddler, is rumored to inhabit Lake Pend Oreille; and Priest Lake is linked to 1920s actress and filmmaker Nell Shipman, who established a wilderness movie studio in what is now Lionhead State Park."