I was watching "How the States Got Their Shapes" tonight and saw the piece on Ohio. Turns out that during Ohio's sesquicentennial there was a big uproar over if Ohio really was a state because they never had a formal proclamation. So this comes to a head and President Eisenhower ends up signing one to end the debate!
While I was looking around at this, I happened to notice that Eisenhower brought in both Alaska and Hawaii as states. So I was looking through the Alaskan documents (as my grandparents remember voting on this decision!) and notice a memo on the subject from Ted Stevens! This quite amused me!