5 of Martin Luther King Jr.'s Most Memorable Speeches
https://www.pbs.org/weta/washingtonweek/blog-post/5-martin-luther-king-jr’s-most-memorable-speeches

American Presidency Project
https://www.presidency.ucsb.edu/index.php

American Rhetoric: Online Speech Bank
http://www.americanrhetoric.com/speechbank.htm

All Things Considered Archive (radio transcripts including many interviews)
http://www.npr.org/programs/atc/archives/

AP Archive
http://www.aparchive.com

BBC The Interview Archive
https://www.bbc.co.uk/programmes/p002vsnh/episodes/player

Conversations with History (Interviews)
http://globetrotter.berkeley.edu/conversations/

Gifts of Speech: Women's Speeches from Around the World
http://gos.sbc.edu/

Greatest Speeches of the 20th Century
https://www.theguardian.com/theguardian/series/greatspeeches

Historical Voices
http://www.historicalvoices.org

History and Politics Out Loud
https://www.wyzant.com/resources/lessons/history/hpol/

History Channel: Speeches 
https://www.history.com/speeches

History Place: Great Speeches Collection
http://www.historyplace.com/speeches/previous.htm

"I Do Solemnly Swear . . .": Presidential Inaugurations
http://memory.loc.gov/ammem/pihtml/pihome.html

Lost and Found Sound (from NPR's All Things Considered)
http://www.npr.org/programs/lnfsound/

Oral History Online! Oral History Online
http://www.lib.berkeley.edu/BANC/ROHO/ohonline/

Speeches of Abraham Lincoln
http://showcase.netins.net/web/creative/lincoln/speeches/speech.htm

Talking History
http://www.talkinghistory.org

Vincent Voice Library
https://lib.msu.edu/vvl/

YouTube: AP Archive
https://www.youtube.com/channel/UCHTK-2W11Vh1V4uwofOfR4w

YouTube: British Movietone
https://www.youtube.com/channel/UCHq777_waKMJw6SZdABmyaA

YouTube: British Pathe
https://www.youtube.com/user/britishpathe