Yes. To file prior years (2016, 2017) you'll have to first buy, download each year's software, then prepare/print/sign/mail in returns individually (one year per envelope), with W-2 and 1099 forms for each year; no on-line filing.
https://turbotax.intuit.com/personal-taxes/past-years-products/
You can buy prior year TurboTax software as a download at above link
https://www.irs.gov/forms-pubs/prior-year
You can download free prior year forms/instructions from IRS at above link
