or, The Last Shot of Submarine D-16.
THE BOY ALLIES UNDER THE SEA;
or, The Vanishing Submarine.
THE BOY ALLIES IN THE BALTIC;
or, Through Fields of Ice to Aid the Czar.
THE BOY ALLIES AT JUTLAND;
or, The Greatest Naval Battle of History.
THE BOY ALLIES WITH UNCLE SAM'S CRUISERS;
or, Convoying the American Army Across the Atlantic.
THE BOY ALLIES WITH THE SUBMARINE D-32;