http://xdl.drexelmed.edu/item.php?object_id=1006&search_param=keyword&search_by=clara%20marshall&t=womanmd|título=The Woman's Medical College of Pennsylvania. An historical outline (es)
http://xdl.drexelmed.edu/item.php?object_id=1006&search_param=keyword&search_by=clara%20marshall&t=womanmd|título=The Woman's Medical College of Pennsylvania. An historical outline (es)