The following extract is from "Combat Aircraft Designer; the Ed Heinemann Story", by E Heinemann and R Rausa, published by Jane's in 1980. Ed Heinemann was, of course, the respected Douglas El Segundo designer of many famous and successful attack aircraft including the Dauntless, Havoc, Invader, Skyraider, Skynight, Skyray, Skywarrior and Skyhawk as well as the Skystreak and Skyrocket research types.
     In Chapter 20 Heineman says...It was 1952 when I had a chat with Sir Sidney (sic) Camm of Hawker Ltd. (sic). A giant in the aviation business, it was his Hurricane which played a vital role in the Battle of Britain. He later developed the Hunters and was instrumental in developing the prototype of the vertical-short-take-off- and-landing aircraft which became the US Marine Corps' first operational V/STOL plane, the Harrier.
     Sir Sidney was a cantankerous gent but I loved him. He was a brilliant man, a real contributor to aviation progress. Try as I did I couldn't get him to visit us in America, but Ithoroughly enjoyed my conversations with him in England.