 Welcome back to When Radio Was on our weekly visit with Mary Foster, the editor's daughter. Enjoy. And now, Mary Foster, the editor's daughter. When Della, Mrs. Darby's housekeeper, refused to take the trip to California with Mary Foster Lord and Mrs. Darby, their plans came to an abrupt halt. Mrs. Darby had planned the trip for her health, and Mary was to accompany her to study at California Boys Club for the town of Valley Springs.