both the iRS and Turbotax are supposed to purge tax files after 6 years so I'm surprised your 2015 was available. However, 2014 and earlier are permanently gone if you did not keep a copy.
that form that is shown is not a standard part of a tax return so the IRS would never have a copy. You would have had to save copies of the returns using the option "tax return and all calculation worksheets" if that option was even available.
