Article 1, Section 8, Clause 8
Document 1
An Act for Preventing the Frequent Abuses in Printing Seditious Treasonable and Unlicensed Books and Pamphlets and for Regulating Printing and Printing Presses 14 Chas. 2, c. 33 (1662)
(See Amend. I [speech and press], no. 1 )
The Founders' Constitution
Volume 3, Article 1, Section 8, Clause 8, Document 1
http://press-pubs.uchicago.edu/founders/documents/a1_8_8s1.html
The University of Chicago Press