• The Bobbsey Twins
• The Bobbsey Twins on Blueberry Island
• The Bobbsey Twins at Home
• The Bobbsey Twins at the Seashore
• The Bobbsey Twins in a Great City
• The Bobbsey Twins in the Country
• The Outdoor Girls in the Saddle; Or, The Girl Miner of Gold Run
• Bunny Brown and His Sister Sue
• The Outdoor Girls in a Motor Car; Or, The Haunted Mansion of Shadow Valley
• The Bobbsey Twins at School
• The Bobbsey Twins on the Deep Blue Sea
• The Bobbsey Twins at Cedar Camp
• The Bobbsey Twins in the Great West
• The Bobbsey Twins on a Houseboat
• Bunny Brown and His Sister Sue at Camp Rest-A-While
• The Outdoor Girls at Ocean View; Or, The Box That Was Found in the Sand
• The Bobbsey Twins in Washington
• The Moving Picture Girls; Or, First Appearances in Photo Dramas
• The Bobbsey Twins at Meadow Brook
• The Outdoor Girls in Florida; Or, Wintering in the Sunny South
• The Outdoor Girls of Deepdale; Or, camping and tramping for fun and health
• The Outdoor Girls at Bluff Point; Or a Wreck and a Rescue
• Six Little Bunkers at Grandma Bell's
• The Outdoor Girls in a Winter Camp
• The Outdoor Girls in Army Service; Or, Doing Their Bit for the Soldier Boys
• Mystery at School
• The Bobbsey Twins and the Mystery at Snow Lodge
• The Bobbsey Twins Megapack
• The Secret at the Seashore
• The Bobbsey Twins and the Mystery at Snow
• Bobbsey Twins_Mystery at School
• The Bobbsey Twins' Adventure in the Country
• The Bobbsey Twins of Lakeport
• The Story of a China Cat