Perhaps no other founder has influenced our understanding of the meaning of the Establishment Clause more than Thomas Jefferson. His name is frequently invoked when scholars or the Supreme Court attempt to discover the original intent of that crucially important provision of the Bill of Rights.
Chadsey, Mark J., "Thomas Jefferson and The Establishment Clause" (2007). Political Science and International Studies Faculty Publications. 3.
2007, 40 Akron L. Rev. 623, Thomas Jefferson and the Establishment Clause, Mark J. Chadsey