The resources below are books, articles, and other media that are useful references for aspects of this topic. When they are complete, each reference will be described and tagged. See here for an example of a more or less complete entry.
Blair, Bruce G. "Strengthening Checks on Presidential Nuclear Launch Authority." Arms Control Today 48, no. 1 (Jan/Feb 2018). https://www.armscontrol.org/sites/default/files/files/ACT/ACT_JanFeb18_Blair_Prepublication.pdf.
Burns, Robert and Richard Lardner. " Retired US general says nuclear launch order can be refused." AP News. November 14, 2017. https://www.apnews.com/14eb66de62fc49b181680ccbd7394646.
Burr, William. Presidential Control of Nuclear Weapons: The "Football." Briefing Book #632. Washington, D.C.: National Security Archive, 2018. https://nsarchive.gwu.edu/briefing-book/nuclear-vault/2018-07-09/presidential-control-nuclear-weapons-football.
Graff, Garrett M. "The Madman and the Bomb." Politico. August 11, 2017. https://www.politico.com/magazine/story/2017/08/11/donald-trump-nuclear-weapons-richard-nixon-215478.
Hoffman, David E. "The Russian Nuclear Button: New questions about the Soviet legacy of three briefcases." Foreign Policy. May 27, 2010. https://foreignpolicy.com/2010/05/27/the-russian-nuclear-button-2/.
Hosenball, Mark and Phil Stewart. "Pentagon to lease privately owned Trump Tower apartment for nuclear 'football': letter." Reuters. May 5, 2017. https://www.reuters.com/article/us-usa-pentagon-trumptower/pentagon-to-lease-privately-owned-trump-tower-apartment-for-nuclear-football-letter-idUSKBN1812B5.
Johnson, Tim. "Trump’s finger soon will hover over the nuclear button. Will he be ready?" McClatchy DC. November 25, 2016. https://www.mcclatchydc.com/news/politics-government/white-house/article117054908.html.
Lewis, Jeffrey. "Our Nuclear Procedures Are Crazier Than Trump." Foreign Policy. August 5, 2016. https://foreignpolicy.com/2016/08/05/our-nuclear-procedures-are-crazier-than-trump/.
McDuffee, Allen. "Jimmy Carter once sent launch codes to the cleaner, and other scary tales of the ‘nuclear football.’" Timeline. November 21, 2017. https://timeline.com/jimmy-carter-once-sent-launch-codes-to-the-cleaner-and-other-scary-tales-of-the-nuclear-football-add77568346e.
Wellerstein, Alex. "No one can stop President Trump from using nuclear weapons. That's by design." Washington Post, December 1, 2016. https://www.washingtonpost.com/posteverything/wp/2016/12/01/no-one-can-stop-president-trump-from-using-nuclear-weapons-thats-by-design/?noredirect=on&utm_term=.05b5b6a7fe06.