flying machine boys on duty
Subtitle: or, The clue above the clouds
Series: The flying machine boys series --  2
Publisher: A. L. Burt
Published: 1913
Place of publication: New York
Language: eng
Number of pages: 256
Subjects: Airplanes -- Juvenile fiction
Other titles: Clue above the clouds
Notes: T.p. vignette

Fontispiece sole illustration

Bound in green pictorial cloth stamped red, brown, and black