Hi Lance,
There's no end of data recovery (undelete) apps out there. The best (most reliable) ones are the ones you have to pay for but there are some really good free ones as well. Recuva and Glary Undelete are two of the best that I know of although I've not had cause to use them so I'm not recommending from personal experience. Do a google search on "data recovery software free", you should be able to find something that will get back your missing files.
Regards, SteveJ