Bill and Gordon Hunniwell, two enterprising and inventive young Americans, have many thrilling experiences far above the clouds in the “Albatross,” their new electric airplane. Their adventures with the Secret Service and narrow escapes in the fog, when searching for the lost German aviators, are admirably described in this new series. THE HUNNIWELL BOYS IN THE AIR THE HUNNIWELL BOYS’ VICTORY THE HUNNIWELL BOYS IN THE SECRET SERVICE THE HUNNIWELL BOYS AND THE PLATINUM MYSTERY THE HUNNIWELL BOYS’ LONGEST FLIGHT A. L. BURT COMPANY, Publishers 114-120 EAST 23d STREET        NEW YORK ------------------------------------------------------------------------ The Radio Boys Series BY GERALD BRECKENRIDGE A new series of copyright titles for boys of all ages. Cloth Bound, with Attractive Cover Designs PRICE, 50 CENTS EACH POSTAGE 10c EXTRA THE RADIO BOYS ON THE MEXICAN BORDER THE RADIO BOYS ON SECRET SERVICE DUTY THE RADIO BOYS WITH THE REVENUE GUARDS THE RADIO BOYS’ SEARCH FOR THE INCA’S TREASURE THE RADIO BOYS RESCUE THE LOST ALASKA EXPEDITION THE RADIO BOYS IN DARKEST AFRICA THE RADIO BOYS SEEK THE LOST ATLANTIS THE RADIO BOYS WITH THE BORDER PATROL THE RADIO BOYS AS SOLDIERS OF FORTUNE For sale by all booksellers, or sent on receipt of price by the Publishers A. L. BURT COMPANY, 114-120 E. 23d St., NEW YORK ------------------------------------------------------------------------ The Boy Allies (Registered in the United States Patent Office) With the Army BY CLAIR W. HAYES For Boys 12 to 16 Years. All Cloth Bound    Copyright Titles In this series we follow the fortunes of two American lads unable to leave Europe after war is declared. They meet the soldiers of the Allies, and decide to cast their lot with them. Their experiences and escapes are many, and furnish plenty of good, healthy action that every boy loves. - THE BOY ALLIES AT LIEGE; or, Through Lines of Steel. - THE BOY ALLIES ON THE FIRING LINE; or, Twelve Days’ Battle Along the Marne. - THE BOY ALLIES WITH THE COSSACKS; or, A Wild Dash Over the Carpathians. - THE BOY ALLIES IN THE TRENCHES; or, Midst Shot and Shell Along the Aisne. - THE BOY ALLIES IN GREAT PERIL; or, With the Italian Army in the Alps. - THE BOY ALLIES IN THE BALKAN CAMPAIGN; or, The Struggle to Save a Nation. - THE BOY ALLIES ON THE SOMME; or, Courage and Bravery Rewarded. - THE BOY ALLIES AT VERDUN; or, Saving France from the Enemy. - THE BOY ALLIES UNDER THE STARS AND STRIPES; or, Leading the American Troops to the Firing Line. - THE BOY ALLIES WITH HAIG IN FLANDERS; or, The Fighting Canadians of Vimy Ridge. - THE BOY ALLIES WITH PERSHING IN FRANCE; or, Over the Top at Chateau Thierry. - THE BOY ALLIES WITH MARSHAL FOCH; or, The Closing Days of the Great World War. For sale by all booksellers, or sent on receipt of price by the Publishers A. L. BURT COMPANY, 114-120 E. 23d St., NEW YORK ------------------------------------------------------------------------