Green Valley State Park
... that Green Valley State Park in Iowa, which was dedicated exactly 69 years ago, had multiple species of fish added to its artificial lake in 1974?
... that <b id="mwAag"><a href="./Green_Valley_State_Park" id="mwAak" rel="mw:WikiLink" title="Green Valley State Park">Green Valley State Park</a></b> in Iowa, which was dedicated exactly 69 years ago, had multiple species of fish added to its <a href="./Reservoir" id="mwAao" rel="mw:WikiLink" title="Reservoir">artificial lake</a> in 1974?