Margaret Penrose was a house pseudonym used by the Stratemeyer Syndicate. Lilian C. McNamara Garis (1873-1954), wrote under the Margaret Penrose and Laura Lee Hope pen names. The Campfire Girls series was a four-book series originally published as the Radio Girls. Это и многое другое вы найдете в книге The Campfire Girls of Roselawn, or A Strange Message from the Air (Margaret Penrose)