Where did all the money go during the Great Depression?

During the roaring twenties several loans were handed out to farmers who could never pay them back. The farmers could never pay the money back due to over-production, management costs and droughts. This resulted in banks taking money from people's savings and using it on the farmers. When the stock market crashed and people wanted their money it wasn't there due to the loans. The banks were forced to shut down and everyone lost their money.