This report details the design and construction of the Heinkel 70 mailplane and its comparison with the Lockheed "Orion."
The High-speed Heinkel He 70 Mail Airplane
1934-05-01
Miscellaneous
No indication
English
The high-speed Heinkel He 70 mail airplane
TIBKAT | 1934
|Engineering Index Backfile | 1933
Engineering Index Backfile | 1933
Engineering Index Backfile | 1929
Heinkel airplane H.D. 39 for carrying newspapers
NTRS | 1926