CHALLENGERS AIRLINES INFO
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Highlights - Sunliner News
Vol. 1 - #12 (Dec. 1952)
Donald A. Duff, ex-President of Challenger Airlines and V. P. Traffic & Sales dies in Minneapolis where he was working 
with Wisconsin Central Airlines (North Central). Duff's motto - "Stay flexible and learn to roll with the punches!" 
He was spoken of as being a human dynamo with a big smile and a hearty laugh. Liked to tell a story to get a meeting 
started or to make a point. 
Internet
(6/21/99)

There is some conflict in the spelling of Mr. Hirsig's last name and the dates on the Presidents' terms of office.
I have used the information in the 1948 Challenger Prospectus in my possession for the information on this website.
Jake Lamkins
(6/22/99)