Happy 90th Birthday, 19th Amendment!
The 19th Amendment, granting women the right to vote, became law on August 26th, 1920.
Some books you might want to read on the subject include:
The process of securing the right to vote for women was an important phase in feminism. Suffrage was first proposed as a part of a general declaration of the rights of women signed at Seneca Falls, New York, in 1848. Chapters in this anthology discuss the roots of the movement, its tactics and disagreements, opposition to the suffragists, and the impact of the Nineteenth Amendment on American society. (Pensacola Campus JK1896 .H54 2006)

They forever changed America: Lucy Stone, Susan B. Anthony, Elizabeth Cady Stanton, Frances Willard, Alice Paul. At their revolution's start in the 1840s, a woman's right to speak in public was questioned. By its conclusion in 1920, the victory in woman's suffrage had also encompassed the most fundamental rights of citizenship: the right to control wages, hold property, to contract, to sue, to testify in court. Their struggle was confrontational (women were the first to picket the White House for a political cause) and violent (women were arrested, jailed, and force-fed in prisons). And like every revolutionary before them, their struggle was personal. (
Milton and Pensacola Campus JK1896 .B35 2005)

In
Votes For Women, Jean H. Baker has assembled an impressive collection of new scholarship on the struggle of American women for the suffrage. Each of the eleven essays illuminates some aspect of the long battle that lasted from the 1850s to the passage of the suffrage amendment in 1920. (
Milton Campus JK1896 .V67 2002)