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.
“We hold these truths to be self-evident; that all men and women are created equal; that they are endowed by their Creator with certain inalienable rights; that among these are life, liberty, and the pursuit of happiness; that to secure these rights governments are instituted, deriving their just powers from the consent of the governed.”