"Bartscher" wrote in message
...
Beechcraft Queen Air
Cessna 206 Stationair
Cessna 210 Centurion
Cessna 208 Caravan (should fall in that period also)

The Cessna 208 Caravan didn't fly until the mid-80s, at roughly the same
time
the Cessna piston singles went off the market. The other 3 planes all
existed
in the 70s.

Thanks to everyone for all the help. I was able to find almost
everything I needed within about ten minutes with those names, and before I
had spent close to three hours without coming up with anything.