In New York City, Witherspoon and Mygatt joined the
Woman's Peace Party, and together edited their publication,
Four Lights. They also organized the Socialist Suffrage Brigade, and edited an issue of
The Call about suffrage. Mygatt joined
Jessie Wallace Hughan and
John Haynes Holmes in launching the Anti-Enlistment League in 1915. Witherspoon and Mygatt continued with peace work after the war, as active members of the
Women's Peace Union, and as founders of the
War Resisters League in 1923. They were charter members of the
Episcopal Pacifist Fellowship when it was founded in 1939. In 1961 they were recognized jointly with the
WRL Peace Award. In 1932, Mygatt ran for the New York State Assembly as the Socialist Party candidate. In 1969, after moving into a retirement home in Philadelphia, she continued to serve as part-time East Coast Secretary of the Campaign for World Government till her death in 1973. Mygatt also wrote several plays on her own (
Children of Israel,
Watchfires,
Grandmother Rocker,
Good Friday,
The Noose,
Sword of the Samurai,
His Son,
Thim Socialists, and ''Bird's Nest
), and published Julia Newberry's Sketch Book: or, The Life of Two Future Old Maids'' (1934), a biography of her mother and her mother's cousin. ==Personal life and legacy==