The Noordoostpolder , a reclaimed territory which had been laid dry in 1942 , was part of Overijssel from 1962 until 1986 , when it became part of the newly created province of Flevoland .
The Noordoostpolder , which had been laid dry in 1942 , was part of Overijssel from 1962 until 1986 , when it became part of the newly created province of Flevoland .