The sinister sign post

The Hardy boys and their father solve a mystery involving inexplicable crashes of highspeed race cars being used to test an experimental turbine motor.

Main Author: Dixon, Franklin W.
Format: Books Print Book
Language: English
Published: New York : Grosset & Dunlap, c1936.
Series: Hardy boys mystery stories ; #15
Subjects:
Summary: The Hardy boys and their father solve a mystery involving inexplicable crashes of highspeed race cars being used to test an experimental turbine motor.
Physical Description: 215 p. : ill. ; 20 cm.