Excerpted from an obituary in the online edition of The Guardian:

    “Wing Commander Peter Cooper, who has died aged 88, spent 22 years in the RAF — including a wartime posting as air attaché at the British Embassy in Ankara – and 22 years as a Middlesex probation officer. As ‘Colin Curzon,’ he wrote two lively, witty mystery stories, The Body in the Barrage Balloon (1942), and The Case of the Eighteenth Ostrich (1940), and a morale booster, Flying Wild (1941), describing the lighter side of training.

    “A sometime arts correspondent for the Times, he was passionate about music, particularly that of Schubert and Wagner. As a vice-president of the Ruislip Gramophone Society he presented programmes of recorded music to rapt audiences. He was perceptive and witty in his comments on musical performances, and could be seen, always immaculately dressed, sitting on a camping stool outside London’s opera houses.”

   Below is Curzon’s entry in Crime Fiction IV, by Allen J.Hubin. As you can see, not much had been known about the author until now, not even that the name he used was not his:

CURZON, COLIN. ca.1917- . With the R.A.F. during WWII.
      * The Body in the Barrage Balloon; or, Who Killed the Corpse? Hurst, UK, hc, 1941. Macmillan, US, hc, 1942. Series character: Mark Antony Lennox; setting: England.
      * The Case of the Eighteenth Ostrich. Hurst, hc, UK, 1943. Macmillan, US, hc, 1944. SC: Mark Antony Lennox; setting: England.

   More about either of the books or Major Lennox has proven difficult to obtain:

Barrage Balloon

   Of Balloon, one online bookseller says only: “R.A.F. mystery.”

   Of Ostrich, another bookseller says: “This is a humorous mystery story about an officer in the US Signal Corps and his disaster prone fiancee.”

   Any additional information provided about the books would be welcome.

   What’s a barrage balloon? That I can tell you. From wikipedia: “A barrage balloon is a large balloon tethered with metal cables, used to defend against bombardment by aircraft by damaging the aircraft on collision with the cables. Some versions carried small explosive charges that would be pulled up against the aircraft to ensure its destruction. Barrage balloons were only regularly employed against low-flying aircraft, the weight of a longer cable making them impractical for higher altitudes.”

    — Thanks to John Herrington for spotting the obituary and sending the link on to Al Hubin.