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

Betty Gordon in Washington

Betty Gordon at Boarding School / The Treasure of Indian Chasm

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

Betty Gordon at Mountain Camp

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

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 on Cliff Island / Or, The Old Hunter's Treasure Box

Ruth Fielding on the St. Lawrence / The Queer Old Man of the Thousand Islands

Ruth Fielding and the Gypsies / The Missing Pearl Necklace