 In 1911 , Macmillan attended the sixth congress of the International Woman Suffrage Alliance ( IWSA ) in Stockholm . There , she embarked upon a long @-@ term project , in cooperation with Marie Stritt , president of the German Union for Woman Suffrage , and Maria Vérone , president of the French League for Women 's Rights , to document women 's voting conditions around the world . In May 1913 , after two years of correspondence with widely separated women 's rights activists to gather global information , the women completed Woman Suffrage in Practice , 1913 , a book to which Carrie Chapman Catt added a foreword . Published in conjunction with the NUWSS and the National American Woman Suffrage Association , the book described current women 's voting practices in 35 countries and empires , with the authors dividing the work by country . Macmillan was responsible for writing about the UK , the US , New Zealand , Australia , India , China , South Africa and five smaller countries . Macmillan noticed that in few countries and empires were women excluded specifically by statute — they were instead kept from voting by custom alone . She wrote from both personal experience and outside observation of women 's activists : " as soon as they become alive to this fact , they have tested the legality of their exclusion in the law courts . " In 1913 , Macmillan attended the seventh IWSA congress in Budapest , and began to serve the IWSA as vice president , a position she would hold for ten years . In 1914 , she authored a 30 @-@ page booklet entitled Facts versus fancies on woman suffrage published by the NUWSS . 
