The primary sources for Timeline: Voting Rights are:
1. Teaching Tolerance, a project of the Southern Poverty Law Center, tolerance.org,
from Democracy Class: The History of Voting Rights (Rock the Vote and Teaching Tolerance)
2. Voting Rights Timeline, businessinsider.com
3. Timeline of voting rights in the United States. Wikipedia, The Free Encyclopedia. Retrieved 14:53, June 30, 2021, from https://en.wikipedia.org/w/index.php?title=Timeline_of_voting_rights_in_the_United_States&oldid=1028075166
4. DOCSTeach, the online tool for teaching with documents, from the National Archives
5. ACLU Voting Rights Act: Major Dates in History
https://www.aclu.org/voting-rights-act-major-dates-history
Additional sources are noted within specific entries to Timeline: Voting Rights.
“For somebody who has the picture of Ronald Reagan on his wall in his office in the Capitol, the notion that now Kevin McCarthy is going to make himself the leader of the pro-Putin wing of my party is just a stunning thing.”