 Chang 's research led her to make what one San Francisco Chronicle article called " significant discoveries " on the subject of the Nanking Massacre , in the forms of the diaries of two Westerners who were in Nanjing leading efforts to save lives during the Japanese invasion . One diary was that of John Rabe , a German Nazi Party member who was the leader of the Nanking Safety Zone , a demilitarized zone in Nanjing that Rabe and other Westerners set up to protect Chinese civilians . The other diary belonged to Minnie Vautrin , the American missionary who saved the lives of about 10 @,@ 000 women and children when she provided them with shelter in Ginling College . The diaries documented the events of the Nanking Massacre from the perspectives of their writers , and provided detailed accounts of atrocities that they saw , as well as information surrounding the circumstances of the Nanking Safety Zone . Chang dubbed Rabe the " Oskar Schindler of Nanking " and Vautrin the " Anne Frank of Nanking " . Rabe 's diary is over 800 pages , and contains one of the most detailed accounts of the Nanking Massacre . Translated into English , it was published in 1998 by Random House as The Good Man of Nanking : The Diaries of John Rabe . Vautrin 's diary recounts her personal experience and feelings on the Nanking Massacre ; in it , an entry reads , " There probably is no crime that has not been committed in this city today . " It was used as source material by Hua @-@ ling Hu for a biography of Vautrin and her role during the Nanking Massacre , entitled American Goddess at the Rape of Nanking : The Courage of Minnie Vautrin . 
