Turbo tax allows you to view previous years tax documents that you filed through turbo tax
TurboTax only has records back to 2013 you will need to contact the IRS for anything prior to that.
Why does TurboTax advertise that filings are retained indefinitely then? <a rel="nofollow" target="_blank" href="https://ttlc.intuit.com/questions/2792486-how-long-will-turbo-tax-keep-my-2014-tax-files">https://ttlc.intuit.com/questions/2792486-how-long-will-turbo-tax-keep-my-2014-tax-files</a>