JFern, your signature line proves FDR's failures in improving the economy - despite the fact that there was a 9% rise in unemployment under Hoover, in all his years as President, FDR was only able to grow the economy enough to bring back half the jobs. So despite the fact he's at the top of your list, he was probably the least successful in improving the unemployment rate of all the presidents on there.
And you think the Free Market alone would bring back all of those jobs?
No, but increasing taxes, regulations, AND backing strikes during a depression was one of the stupidest possible things anyone could have done. In fairness though it would have lasted longer than most prior crashes anyway thanks to Hoover's protectionism and tax hikes too.