One such initiative was a tree planting held in 1926 in northern France. Baer also served as vice president of the German Peace Cartel and traveled widely in Europe. Returning to the United States in 1924 to attend the WILPF International Conference, Baer urged that Hitler be taken as a serious threat. In 1929, she succeeded Jane Addams as the International Chair of the WILPF, but due to the volume of work to be done, it was decided that the responsibilities Addams had carried were to be shared with Emily Greene Balch and Clara Ragaz.
Baer
Jane Addams