About Margaret Penrose
Source: Wikipedia
Margaret Penrose was a house pseudonym used by the Stratemeyer Syndicate as the author of three girls' book series published by Cupples & Leon. The name Margaret Penrose was used for: The Dorothy Dale series – 1908 to 1924, 13 volumes The Motor Girls series – 1910 to 1917, 10 volumes The Radio Girls series – 1922 to 1924, 4 volumes Camp Fire Girls books – renamed reprints of The Radio Girls series, 4 volumes The Dorothy Dale series was ghostwritten by the following authors: Lilian Garis volumes
