Ruth Fielding of the Red Mill; Or, Jasper Parloe's Secret
Ruth Fielding at Snow Camp; Or, Lost in the Backwoods
Betty Gordon in Washington; Or, Strange Adventures in a Great City
Betty Gordon at Boarding School; Or, The Treasure of Indian Chasm
Betty Gordon at Mountain Camp; Or, The Mystery of Ida Bellethorne
Ruth Fielding on Cliff Island; Or, The Old Hunter's Treasure Box
Ruth Fielding in Moving Pictures; Or, Helping the Dormitory Fund
Ruth Fielding in the Great Northwest; Or, The Indian Girl Star of the Movies
Ruth Fielding at the War Front; or, The Hunt for the Lost Soldier
Ruth Fielding and the Gypsies; Or, The Missing Pearl Necklace
Ruth Fielding Down East; Or, The Hermit of Beach Plum Point
Ruth Fielding on the St. Lawrence; Or, The Queer Old Man of the Thousand Islands
Ruth Fielding At College; or, The Missing Examination Papers
Ruth Fielding at Briarwood Hall; or, Solving the Campus Mystery
Betty Gordon in the Land of Oil; Or, The Farm That Was Worth a Fortune
Ruth Fielding at Lighthouse Point; or, Nita, the Girl Castaway
Ruth Fielding in the Red Cross; Or, Doing Her Best for Uncle Sam
Ruth Fielding In the Saddle; Or, College Girls in the Land of Gold
Ruth Fielding At Sunrise Farm; Or, What Became of the Raby Orphans
Ruth Fielding at Silver Ranch; Or, Schoolgirls Among the Cowboys
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
Betty Gordon at Bramble Farm; Or, The Mystery of a Nobody
Ruth Fielding in Alaska
Ruth Fielding at Golden Pass