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 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. Her children Roger and Cleo also wrote juvenile fiction.