If you used the desktop CD/Download editions installed on your computer, the only copy of your tax data file and any PDF's will be on the computer where the return was created. TurboTax does not store online any returns completed using the desktop editions.
You can get copies of a complete federal tax return from the IRS for a fee of $50 for each tax return. Complete IRS Form 4506 - https://www.irs.gov/pub/irs-pdf/f4506.pdf
