No, do not include a copy of last year's return with this year's return.
If for some reason you have not filed last year's return (2015) they should be mailed in separate envelopes.
To find the address for your area click the link here. Where
to File Paper Returns With or Without a Payment
If you need the state mailing address select your state below.
https://ttlc.intuit.com/replies/3302452
