Margaret Penrose
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
The Dorothy Dale series was ghostwritten by the following authors: Lilian Garis volumes 1 – 8, 11; W. Bert Foster volumes 9, 10, 12; and Elizabeth Duffield Ward volume 13. Provided by Wikipedia
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