Sorry you gave to buy each year separately. And they only sell & support the last 3 years. So currently you can buy 2016-2018 here, https://turbotax.intuit.com/personal-taxes/past-years-products/
You have to print and mail prior year returns. When you mail a tax return, you need to attach any documents showing tax withheld, such as your W-2’s or any 1099’s. Use a mailing service that will track it, such as UPS or certified mail so you will know the IRS or State received the return.
Mail each year and federal and state in separate envelopes.
