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.
“If the negro knows enough to fight for his country he knows enough to vote; if he knows enough to pay taxes for the support of the government, he knows enough to vote; if he knows as much when sober, as an Irishman knows when drunk, he knows enough to vote”.