Peck, Leonard W. "Dombrowski v. Pfister (1965)". The First Amendment Encyclopedia presented by the John Seigenthaler Chair of Excellence in First Amendment Studies. Archived from the original on July 9, 2020. Retrieved July 9, 2020.
Peck, Leonard W. "Dombrowski v. Pfister (1965)". The First Amendment Encyclopedia presented by the John Seigenthaler Chair of Excellence in First Amendment Studies. Archived from the original on July 9, 2020. Retrieved July 9, 2020.