Margaret Richards Millar was born in 1858 in Vermont to Jonas DeForest Richards and Harriet Bartlett Jarvis. Her father, a New England Congregationalist pastor, decided late in life to move the family to the American South. Immediately following the end of the Civil War in 1865, the family relocated to Alabama, having purchased a cotton plantation in Wilcox County. Margaret was educated at home and ultimately obtained a degree from the Bradford Academy in Massachusetts in 1880. Marrying Stocks Millar, a Scottish immigrant educated at the University of St. Andrews, she spent her married life on the Wyoming plains, where she developed a reputation as a hostess for army personnel stationed in the Territory. When her husband passed away in 1890, she spent the next several years in France and Germany with their three children. In 1896, she converted to Catholicism alongside her son, future Jesuit Morehouse F. X. Millar (later collaborator with John A. Ryan). In 1918, as a representative of the American Bureau of Education, she was sent to France to recruit French women to attend college in the United States. Shortly thereafter, she was sent back to France as a representative of the Committee on Special War Activities of the National Catholic War Council (NCWC), in order to organize and supervise service clubs for American soldiers. She would open the Etoile Service Club in Paris that same year. In 1919, she was sent as the only American Catholic delegate to the Women's Peace Conference in Switzerland, serving alongside Jane Addams. In October 1919, Millar was unexpectedly recalled to the United States by Rev. John Burke, head of the NCWC. She subsequently remained in Texas the following year, helping to organize the first conference of the National Council of Catholic Women (NCCW), held in 1920. An active member of the NCCW and NCWC for the remaining years of her life, Millar passed away in 1947. This digital collection consists of correspondence, clippings, a diary, and photographs, and memorabilia highlighting the work of Mrs. Margaret Millar and the National Catholic War Council "Women Workers" in France immediately following the First World War.