One Hundred Years toward Suffrage: An Overview, Library of Congress
Timeline and Map of Woman Suffrage Legislation State by State 1838-1919, University of Washington
Timeline of the Women’s Suffrage Movement in the U.S., Teach a Girl to Lead, Center for American Women and Politics, Rutgers University
US Suffrage Movement Timeline, 1869 to present, Susan B. Anthony Center, University of Rochester
U.S. Women’s Suffrage Timeline 1648 to 2016, National Park Service
Woman Suffrage Timeline (1840-1920), National Women’s History Museum
Women’s Suffrage: Fact Sheet (including a women’s suffrage legislative timeline), Congressional Research Service