The Motor Car Dumpy Book
The Motor Boys Under the Sea; or, From Airship to Submarine
The Motor Boys Overland; Or, A Long Trip for Fun and Fortune
The Motor Boys on the Wing; Or, Seeking the Airship Treasure
The Motor Boys on the Pacific; Or, the Young Derelict Hunters
The Motor Boys on the Border; Or, Sixty Nuggets of Gold
The Motor Boys in Mexico; Or, The Secret of the Buried City
The Motor Boys After a Fortune; or, The Hut on Snake Island
The Motor Boys Across the Plains; or, The Hermit of Lost Lake
The Motor Boat Club in Florida; or, Laying the Ghost of Alligator Swamp
The Motor Boat Club and The Wireless; Or, the Dot, Dash and Dare Cruise
The Motley Muse (Rhymes for the Times)
The Moths of the British Isles, Second Series
The Moths of the British Isles, First Series
The Mother's Recompense, Volume 2
The Mother's Recompense, Volume 1