The Mystery Boys and the Inca Gold

I.A DEAD LETTER COMES TO LIFE
II.THE MYSTERY BOYS ADD A MEMBER
III.GOLD, AND A LIFE AT STAKE
IV."QUIPU BILL"
V.THE CHUMS PROVE THEIR METTLE
VI.A NEW MYSTERY DEVELOPS
VII.CLIFF TRIES A RUSE
VIII.THE OUTCOME
IX.AMBUSHED!
X.THE HIDDEN CITY
XI."CHASCA, HAILLI!"
XII.CLIFF FACES A PROBLEM
XIII.THE GAMES
XIV.GOLD, AND A SURPRISE
XV.THE FEAST OF RAYMI
XVI.THE MYSTERY BOYS HOLD COUNCIL
XVII.FROM BAD TO WORSE
XVIII.TIT FOR TAT
XIX.HUAMACHACO'S SECRET
XX.ON THE TEMPLE STEPS
XXI.RATS IN A TRAP
XXII.THE TEMPLE OF THE SUN
XXIII.CHASCA APPEARS AGAIN
XXIV.THE INCA SPEAKS
XXV.TOM'S ADVENTURE
XXVI.INTO THE DUNGEONS
XXVII.BEASTS OF BURDEN
XXVIII."CAN WE GET THERE IN TIME?"
XXIX.AT THE CISTERN
XXX.A FORTUNE BY MISFORTUNE
XXXI.CLIFF BECOMES A PROPHET
XXXII.THE ANDES CLOSE THEIR JAWS
XXXIII.NO WAY OUT?
XXXIV.HUAYCA PLAYS DECOY
XXXV.FOLDED ARMS