View source for The Aero, 1909, The Mumford Aerodrome

Description and simple diagram of "helicopter type" flying machine designed by [[Edwin Richard Mumford]]. Propellers are used for vertical takeoff but the same ones can be readjusted for horizontal movement.

{{Publication
|Original title=The Mumford Aerodrome. A Scottish Machine of the Helicopter Type.
|Simple title=The Mumford Aerodrome
|Authors=
|Date=1909-05-25
|Countries=GB
|Languages=en
|Keywords=Edwin Richard Mumford; helicopter
|Journal=The Aero
|Related to aircraft=1
|Page count=1
|Word count=
|Wikidata id=
}}

=== Sources ===
* [https://babel.hathitrust.org/cgi/pt?id=uc1.c2564582&view=1up&seq=14 Scan] at HT