Article 1, Section 8, Clause 3 (Commerce)
Document 15
Corfield v. Coryell
6 Fed. Cas. 546, no. 3,230 C.C.E.D.Pa. 1823
The Founders' Constitution
Volume 2, Article 1, Section 8, Clause 3 (Commerce), Document 15
http://press-pubs.uchicago.edu/founders/documents/a1_8_3_commerces15.html
The University of Chicago Press