The Motor Girls on the Coast or the Waif from the Sea — Margaret Penrose

Popular children's book, first published in 1913, part of the Motor Girls series. According to Wikipedia: "Margaret Penrose was a house pseudonym used by the Stratemeyer Syndicate. The name Margaret Penrose was used for: The Dorothy Dale series, The Radio Girls series (Later reprinted as The Campfire Girls series), and The Motor Girls series. Many of these books were written by Lilian Garis." "Lilian C. Garis , born Lilian C. McNamara (1873-14 April 1954) was an American author who wrote hundreds of books of juvenile fiction between around 1915 and the early 1940's. Prior to this, she was a reporter for the Newark Evening News in New Jersey. For the Stratemeyer Syndicate she wrote under the pseudonym Margaret Penrose and Laura Lee Hope, with her works including some of the earliest books in the Bobbsey Twins series[1] as well as the Dorothy Dale series. But Mrs. Garis also wrote some books under her own name. Her husband, Howard Roger Garis was also a Syndicate writer and DJ on WNJR."