Freight trains of the sky.
Publisher: Putnam
Published: 1969
Place of publication: New York
Language: eng
Number of pages: 72
Subjects: Aeronautics, Commercial -- Freight.; Aeronautics, Commercial -- Freight.
Description: Traces the history of commercial cargo airplanes and describes the type of freight carried from the single package flown in 1910 to the thousands of tons of varied freight flown today.