6 maxicards from Åland Islands

I bought online very cheaply this 6 maxicards from Åland Islands. Three of them are same, but with different stamps and different postmarks dedicated to three philatelic exhibitions: Oslo 15-10.10.1985, Chicago 22.5-1.6.1985 and Paris 6-11.11.1986.

First maxicard for Oslo exhibition have stamp Nordic orienteering championships, issued on 1986-01-02.

Second maxicard for Paris exhibition have stamp Midsummer Pole, issued on 1985-01-02.

Third maxicard for Chicago exhibition have stamp Landscapes (from set of three), issued on 1985-09-16.

This is maxicard The 100th Anniversary of Agricultural Education, issued on 1988-03-29.

Last two maxicards are from set Ducks. This one is Eider (Somateria mollissima), issued on 1987-01-02.

And this one is Velvet Scoter (Melanitta fusca), issued on 1987-01-02.