US National Archives
Nara: Teaching With Documents: Woman Suffrage and the 19th Amendment/lessons
This National Archives and Records Administration site briefly discusses the background of the 19th Amendment and offers primary sources, activities, and links to related web sited for educators and students.
Texas State Library and Archives Commission
Texas State Library and Archives Commission: Aftermath: League of Women Voters, 1923 Report
Here is an 11-page report written by Jessie Daniel Ames, the president of the Texas League of Women Voters, which details the founding of the League of Women Voters and their activities following the ratification of the 19th Amendment.