The Motor Boys in the Clouds: Or, A Trip for Fame and Fortune

The Motor Boys in the Army, Or, Ned, Bob and Jerry as Volunteers

The Motor Boys: Or, Chums Through Thick and Thin

The Racer Boys, Or, The Mystery of the Wreck

The Motor Boys Over the Rockies: Or, A Mystery of the Air

The Motor Boys on the Pacific: Or, The Young Derelict Hunters

The Racer Boys on the Prairies, Or, The Treasure of Golden Peak

The Motor Boys in Strange Waters, Or, Lost in a Floating Forest

The Motor Boys Across the Plains, Or, The Hermit of Lost Lake

The Motor Boys in Mexico; Or, The Secret of the Buried City

The Motor Boys on the Atlantic: Or, The Mystery of the Lighthouse

The Motor Boys Afloat: Or, The Stirring Cruise of the Dartaway

The Motor Boys on Thunder Mountain Or: The Treasure Chest of Blue Rock