Constructions Aéronautiques Émile Dewoitine was a French aircraft manufacturer established by Émile Dewoitine at Toulouse in October 1920.
The company was liquidated in January 1927, with the only remaining active programme (the D.27) being transferred to EKW in Switzerland.
The company was re-established in Paris in March the following year as Société Aéronautique Française (Avions Dewoitine) or SAF. After briefly continuing D.27 production, the reconstituted firm produced a range of fighters that became a mainstay of the French airforce during the 1930s, the D.500 family.
The firm was nationalised in March 1937 into the short-lived SNCA du Midi or SNCAM, and produced the D.520 as France's best-performing fighter at the outbreak of war, albeit in too small numbers to pose any serious opposition to the Luftwaffe in the Battle of France.
The final end of Dewoitine as a recognisable entity was its absorption into SNCASE in December 1940.
[Wikipedia]

The Hanriot HD.1 was a French World War I single seat fighter. Rejected for service with French squadrons in favour of the SPAD S.7,[1] the type was supplied to the Belgians and the Italians with whom it proved highly successful. 831 of a total production of about 1200 were in fact produced by Italian companies under licence.
On the power of its 110 hp Le Rhone rotary it was not outstandingly fast, but it was very manoeverable and proved popular with pilots as a safe and pleasant aircraft to fly.
The type was also produced by the Nieuport-Macchi company of Varese, Italy, which built almost 900 HD.1s between 1917 and 1919, more than the parent firm. [Wikipedia]

Beech G18S "Twin Beech" HB-GAC c/n 8434.
(For existing 'Twin Beeches' in Europe, see census at OldProps)

Bob Parmerter, aviation historian with specialty interest in the Beech 18, has serious doubts about the identity as given above; he wrote me the following:
"In reviewing the history of HB-GAC at the Swiss Transportation Museum
I found several incorrect c/n's quoted. Your picture in the page for 'Dubendorf Air Force Center museum' quotes it as a G18S c/n 8434 (as does Old Props) while several other references note it as c/n 8343. I believe that neither is correct...
> C/n 8434 became N8039H and was for many years was at Duffy Aircraft> Parts in Denver.
> C/n 8343 went to the Italian AF in 1949 as MM61644 & displayed at> Ditellandia Aqua Park in '97.

I believe that it is C18S c/n 8362:

This Beech C-45F has the following previous identities & history: USAAF 44-87103 Compl 10Apr45 & delivered to New York. Crated &> departed 09Jun45 for AAF in Karachi.
On the 30Apr47 USAAF in Europe census (probably stored). To Foreign Liquidation Commission (FLC), to Aland Braithwaite, Hotel Plaza-Athenee, Paris on 15Jul48 registered as NC79848.
Modified to C18S, with a Beech civil conversion kit, on 06Aug48 by Airwork General Trading Co. Ltd., Heston, UK. Completely overhauled by them on 19Aug49. Rene S. McCall, Charlotte, NC on 19Mar51 as N79848 for $15,000.
Bought by Swedish national 17May51, it was cancelled by CAA on 18May51 as exported to Sweden. Reg’d SE-BTS 29Jun51 to AB Kvallstidningen Expressen, Stockholm for newspaper distribution & executive flights. Registration canx 29Jan52.
Swiss Air Force as B-8 ‘52 to ‘57. Swiss Federal Air Office for National Topography as HB-GAC May57 and jointly operated with the Swiss Air Force.
Sold as scrap to Berner AG, St. Gall in 1969 for use in a playground (didn’t happen).
Sold in Jul72 to Honcoop Trading Co, Veen, Holland who sold it to O. Trottman, Zurich. Was rebuilt in 1972 and based in Berne in ‘74.
Donated to the the Swiss Transportation Museum in ‘80. Still there in 2010.

Source(s): FAA file for NC79848, AAF aircraft record card and several other sources.
I'm not sure what the Museum quotes for a c/n but can't seem to find a contact for the Museum..."
Bob

Taigh Ramey wrote in response 21Mar2011:
"I just visited the museum and the Beech in Dubendorf, Switzerland yesterday! I was told that this Beech has significant history in Swiss Aviation, as the photos taken from it were instrumental in the aerial mapping of the Alps.
It is a great looking stock 'C'-model Beech and is complete with 2D30 counterweight non feathering props, spinners and even desert air filters.
The airframe has interesting modifications, including a large camera and view port mounted in the aft cabin that shoots straight downward.
There is a set of windows in the belly just aft of the pitot tubes that look like the pilot and copilot can sight through. They must have corresponding ports in the cockpit floorboards. I can even see the fuel lines through these windows...
The right side escape hatch looks to have been converted to a full window. There is a rectangular opening in the main cabin door presumably for oblique shots similar to the SNB-5P/RC-45J."

The de Havilland DH.112 Venom was a British postwar single-engined jet aircraft developed from the de Havilland Vampire.[2] It served with the Royal Air Force as a single-seat fighter-bomber and two-seat night fighter.
The Venom was an interim between the first generation of British jet fighters – straight-wing aircraft powered by centrifugal flow engines such as the Gloster Meteor and the Vampire – and later swept wing, axial flow-engined designs such as the Hawker Hunter and de Havilland Sea Vixen. [Wikipedia]