[1] She served as Secretary of the White Shield Branch of the National Woman's Christian Temperance Union (WCTU) and began writing and lecturing the same year.

[1] In 1910, Chapman attended the World's WCTU convention in Glasgow, Scotland, and later in the year, was in Madrid as a delegate to the congress on the suppression of the white slave traffic.

[1] In the summer of 1911, she had charge of the Woman's Purity Conferences of the International Christian Endeavor Convention, and the following winter, resigned her position in the National and World's WCTU in order to devote herself to writing.

[6] She was a member the Will H. Hays "committee of twenty," which included in its membership Mrs. Herbert H. Hoover, president of the Girl Scouts; Charles A. McMahon, editor, National Catholic Welfare Council Bulletin, and a group of civic leaders from throughout the U.S.

[1] Rose Woodallen Chapman died October 27, 1923, at the Hotel Woodward, New York City, after a long illness with persistent anemia.