Eighty-one years ago today, on April 6, 1926, the first official
commercial mail transport flight occurred

I don't believe this date is accurate, since the first
transcontinental air mail flight went through Iowa City fully 5 years
before this, in February 1921.

See:

http://www.alexisparkinn.com/knight_flyer.htm

and

http://www.alexisparkinn.com/the_iowa_city_airport.htm
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"