What 1099s, etc. required to send with state (NC) tax?

TT Friends -

I filed my federal tax electronically but am planning to mail my North Carolina state tax in order to save the $25 e-file fee. I did this last year and it all went well. I can't remember if I had to submit any supporting 1099s (INT, DIV, etc.) The TT instructions said to only include 1099s, etc. "that show North Carolina tax withheld." I had no tax withheld. Do they get this income information elsewhere so no need for me to send hard copies? Thanks!

Bob

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