- Alford, Bill1
- Atkins, George1
- Australia2
- Battles, Roy1
- Beaty, Layne1
- Bennett, Charles Dana1
- Biggar, George C.1
- Bliss, Milton E.1
- British Broadcasting Corporation (BBC)1
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- Canada1
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- Curtiss, Dean1
- England1
- Farm Journal2
- Hansen, Mal1
- Harper, Dix1
- Heinz, Al1
- Hood, Johnnie1