ZEHNDER, Herbert, Major, USAF, with Igor Sikorsky and Major Donald B. Maurras, Le Bourget, 1 June 1967 Published on May 25, 2013 in 31 May–1 June 1967Full resolution (681 × 541) ← Previous Next → Left to Right: Major Herbert Zehnder, USAF; Igor Sikorsky; Major Donald B. Murras, USAF, at Le Bourget, 1 June 1967.