Title: The sinister sign post /
Authors: Dixon, Franklin W.; Gretter, J. Clemens,
Publisher: Grosset & Dunlap,
Year: 1936
Subjects: Mystery and detective stories.; Hardy Boys (Fictitious characters) Juvenile fiction.; Brothers Juvenile fiction; Automobiles, Racing Juvenile fiction.
Abstract: The Hardy boys and their father solve a mystery involving inexplicable crashes of highspeed race cars being used to test an experimental turbine motor.