POWER BUILDER 1
1．BRAVE BALLERINA 1
2．THE TREASURE OF SANIBEL ISLAND 11
3．MARLIN PERKINS'WORLD 21
4．MISSISSIPPI STEAMBOAT DAYS 31
5．NEW YORK'S BIG DITCH 42
6．THE DAY THE BIG TOP BURNED 53
7．THE BEAU CATCHER 63
8．DANGER IN SPACE 74
9．RAIN IS BORN 84
10．TRAVELING STUDENTS 94
11．CATS ARE NO GOOD BUT 105
12．TOUGH TEEN TO TENNIS QUEEN 115
13．THE TEN-GALLON HAT 126
14．TAME VOLCANOES 136
15．FREEDOM FROM PAIN 146
16．NORTH OF THE ARCTIC？E 156
RATE BUILDER 167
KEY 1 212
KEY 2 228