quadrangle" with the three of them. Dennett feared the negative effect that her involuntary notoriety might have on the organizations she worked with and considered resigning from the Twilight Sleep Association. In 1914, Dennett met Margaret Sanger, a birth control advocate. Dennett was intrigued, but did not feel financially secure enough to join the birth control movement at the time. In 1915, Dennett wrote a sex education pamphlet for her children, as the result of the lack of any existing educational material that met her standards, which included scientific correctness, sex-positivity, and discussion of the emotional side of sexual relationships. The arrest of William Sanger in 1915 for distributing Margaret Sanger's birth control pamphlet catalyzed the birth control movement in the United States, and this time Dennett decided to get involved. Dennett co-founded The National Birth Control League in 1915 with Jesse Ashley and Clara Gruening Stillman. In 1918, she became the NBCL's executive secretary and started a campaign to make birth control information legal, giving lectures and lobbying state legislatures to change the laws. During this time, her pamphlet on sex education, "The Sex Side of Life," was published. Later, as the NBCL faltered, she resigned as executive secretary and founded a new organization, the Voluntary Parenthood League, which focused on repealing anti-birth control information laws at the federal level. In 1929, Dennett was arrested for her work with sex education, women's rights, and birth control. Many people felt that her work was obscene and she should be imprisoned or fined. "Mary Dennett sounded defiant, proclaiming she would pay no fine, however small: 'If a few federal officials want to use their power to penalize me for my work for the young people of this country, they must bear the shame of a jail sentence. It is government which is disgraced, not I." Dennet was proud of her work in sexual education and wanted it to last. Women's suffrage Dennett did not become active in the women's suffrage movement until her marriage began to break up. Later, she wrote, "I went into suffrage work, as perhaps you know, because I needed an anaesthetic at the time, and suffrage was the nearest thing at hand that was unconnected with my previous work." She began as field secretary of the Massachusetts Suffrage Association, organizing lectures, rallies, sermons, cheap meals, speaking tours to gather signatures for petitions, and similar outreach efforts. Dennett's