19.-Boy Scout Verdun Attack.
20.—Boy Scouts with the Cossacks; or, Poland Recaptured.
THE MOTORCYCLE CHUMS SERIES
By Andrew Carey Lincoln
1.—Motorcycle Chums in the Land of the Sky; or, Thrilling Adventures on the Carolina Border.
2.—Motorcycle Chums in New England; or, The Mount Holyoke Adventure.
3.—Motorcycle Chums on the Sante Fé Trail; or, The Key to the Treaty Box.
4.—Motorcycle Chums in Yellowstone Park; or, Lending a Helping Hand.
5.—Motorcycle Chums in the Adirondacks; or, The Search for the Lost Pacemaker.
6.—Motorcycle Chums Storm Bound; or, The Strange Adventures of a Road Chase.