Women's International League for Peace and Freedom people

Gertrud Baer (1890–1981) was a German Jewish women's rights and peace activist. One of the founding members of the Women's International League for Peace and Freedom, she served as the executive secretary of the German branch of WILPF beginning in 1921 and co-chair of the international organization from 1929 to 1947. Throughout World War II, though leadership was shared, Baer was the primary leader of the organization. At the end of the war, she became the first WILPF consultant to the United Nations and held that post until 1972.

Anita Theodora Johanna Sophie Augspurg (22 September 1857 – 20 December 1943) was a German jurist, actress, writer, activist of the radical feminist movement and a pacifist.

Léonie La Fontaine (October 2, 1857–February 26, 1949) was a Belgian pioneering feminist and pacifist. Active in the international feminism struggle, she was a member of the Belgian League for the Rights of Women, the National Belgian Women Council and the Belgian’s Women's International League for Peace and Freedom.
Her brother was Henri La Fontaine, Belgian international lawyer and president of the International Peace Bureau who received the Nobel Prize for Peace in 1913, and was also an early advocate for women's rights and suffrage, founding in 1890 the Belgian League for the Rights of Women.Very close to the Mundaneum project, initiated by Paul Otlet and her brother Henri La Fontaine and to the notion of documentation, she initiated the Office central de documentation féminine in 1909, and created in her own home a library for the Belgian League for the Rights of Women, to help women in their professional choices.
Léonie La Fontaine died on 26 January 1949, the year when the law allowing women to vote came into effect.