Results:

Betty Gordon at Boarding School; Or, The Treasure of Indian Chasm

Betty Gordon at Bramble Farm; Or, The Mystery of a Nobody

Betty Gordon at Mountain Camp; Or, The Mystery of Ida Bellethorne

Betty Gordon in Washington; Or, Strange Adventures in a Great City

Betty Gordon in the Land of Oil; Or, The Farm That Was Worth a Fortune

Ruth Fielding At College; or, The Missing Examination Papers

Ruth Fielding At Sunrise Farm; Or, What Became of the Raby Orphans

Ruth Fielding Down East; Or, The Hermit of Beach Plum Point

Ruth Fielding Down in Dixie; Or, Great Times in the Land of Cotton

Ruth Fielding Homeward Bound; Or, A Red Cross Worker's Ocean Perils

Ruth Fielding In the Saddle; Or, College Girls in the Land of Gold

Ruth Fielding and the Gypsies; Or, The Missing Pearl Necklace

Ruth Fielding at Briarwood Hall; or, Solving the Campus Mystery

Ruth Fielding at Golden Pass

Ruth Fielding at Lighthouse Point; or, Nita, the Girl Castaway

Ruth Fielding at Silver Ranch; Or, Schoolgirls Among the Cowboys

Ruth Fielding at Snow Camp; Or, Lost in the Backwoods

Ruth Fielding at the War Front; or, The Hunt for the Lost Soldier

Ruth Fielding in Alaska

Ruth Fielding in Moving Pictures; Or, Helping the Dormitory Fund