Editing Clear and present danger (section)

==References==
* Eastland, Terry, ''Freedom of Expression in the Supreme Court: The Defining Cases'', Rowman & Littlefield Publishers, 16. August 2000, {{ISBN|978-0847697113}}
* [[Paul Finkelman|Finkelman, Paul]] (Editor), ''Encyclopedia of American Civil Liberties'' (two volumes),  CRC Press, 2006,  {{ISBN|978-0415943420}}
* Kemper, Mark, "Freedom of Speech", in Finkelman, Vol 1, p 653&ndash;655.
* Killian, Johnny H.; Costello, George; Thomas, Kenneth R., ''The Constitution of the United States of America: Analysis and Interpretation'',   	Library of Congress, Government Printing Office, 2005, {{ISBN|978-0160723797}} <ref>{{cite web|url=https://constitution.congress.gov/browse/ |title=Browse &#124; Constitution Annotated &#124; Congress.gov &#124; Library of Congress |publisher=Constitution.congress.gov |date= |accessdate=2022-04-03}}</ref>
* Rabban, David, ''Free Speech in Its Forgotten Years'', Cambridge University Press, 1999, {{ISBN|978-0521655378}}
* [[Martin Redish|Redish, Martin H.]], ''The Logic of Persecution: Free Expression and the McCarthy Era'', Stanford University Press, 2005, {{ISBN|978-0804755931}}