Margaret Penrose
A house pseudonym used by the Stratemeyer Syndicate.
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Dorothy Dale (A Girl of To-Day)
Dorothy Dale's Camping Days, [en] 1911
Dorothy Dale's Queer Holidays, [en] 1910
The Motor Girls on a Tour
or, Keeping a Strange Promise, [en] 1910
The Motor Girls on Cedar Lake
Or the Hermit of Fern Island
The Motor Girls on Waters Blue
or, The Strange Cruise of The Tartar
The Motor Girls Through New England
or, Held by the Gypsies, [en] 1911
The Motor Girls
A Mystery of the Road, [en] 1910