- ed-aviator-remembered-following-death-1.7087959 Wesselink, Theo (2019).
Difoga 421 en
Fokker F.25
Promotor (in Dutch). Netherlands: Wesselink. ISBN 978-9491993145...
- and
built at Bergen-op-Zoom. This
aircraft emerged postwar as the
Diepen Difoga 421 aircraft, and was
flown for the
first time in 1946, but
proved unsuccessful...
- a.k.a. 'The Comet' Dietz-Schreiber
Skylark (Frits
Diepens Ford Garage)
DiFoGa 421 (Dirección
Nacional de Fabricación e Investigación Aeronáutica - Spanish...
