I dont know where you are getting your research from but the Great Depression lasted the entire decade of the 30's and many say it was only worsened and prolonged by Roosevelt's actions...
The great depression consisted of about 3 recessions one in late 1929, one in 1933, and one in 1937.
A whole bunch of information on the Great Depression
http://ingrimayne.com/econ/EconomicCatastrophe/GreatDepression.html
Now saying that Roosevelt's plans actually helped one would have to completely ignore the recession and the number of business failures that took place in 1937.
Some information on the Post WW I recession
http://en.wikipedia.org/wiki/Post-WWI_recession
I suggest you re-research....