| LOST ON THE ORINOCO. | YOUNG EXPLORERS OF THE AMAZON. | |
| THE YOUNG VOLCANO EXPLORERS. | TREASURE SEEKERS OF THE ANDES. | |
| YOUNG EXPLORERS OF THE ISTHMUS. | CHASED ACROSS THE PAMPAS. |
Dave Porter Series
Cloth. Illustrated. Net $1.75 per volume.
| DAVE PORTER AT OAK HALL. | DAVE PORTER ON CAVE ISLAND. | |
| DAVE PORTER IN THE SOUTH SEAS. | DAVE PORTER AND THE RUNAWAYS. | |
| DAVE PORTER'S RETURN TO SCHOOL. | DAVE PORTER IN THE GOLD FIELDS. | |
| DAVE PORTER IN THE FAR NORTH. | DAVE PORTER AT BEAR CAMP. | |
| DAVE PORTER AND HIS CLASSMATES. | DAVE PORTER AND HIS DOUBLE. | |
| DAVE PORTER AT STAR RANCH. | DAVE PORTER'S GREAT SEARCH. | |
| DAVE PORTER AND HIS RIVALS. | DAVE PORTER UNDER FIRE. |
DAVE PORTER'S WAR HONORS.
Lakeport Series
Cloth. Illustrated. Net $1.75 per volume.
| THE GUN CLUB BOYS OF LAKEPORT. | THE FOOTBALL BOYS OF LAKEPORT. | |
| THE BASEBALL BOYS OF LAKEPORT. | THE AUTOMOBILE BOYS OF LAKEPORT. | |
| THE BOAT CLUB BOYS OF LAKEPORT. | THE AIRCRAFT BOYS OF LAKEPORT. |
American Boys' Biographical Series
Cloth. Illustrated. Net $1.75 per volume.