University of Bristol - Historical Photographs of China reference number: Ro-n1004. St. Mary’s Hall was a Christian girls’ school, on Brenan Road, Shanghai, established by the Episcopal Church of the United States. See the Wikipedia entry. The stars and stripes flag is on the ground to indicate to aircraft that the property was American. See Ro-n1001, Ro-n1002, Ro-n1003 and Si-s30.
An American flag placed on the lawn, campus of St. Mary’s Hall (圣玛利亚女中), Shanghai