The Little Brother (1917)

To earn her own living, Jerry Ross dresses as a boy and sells newspapers on the street corner. As the result of a chance meeting with Frank Girard, who is interested in the "Big Brother Movement," Jerry is invited to Girard's farm in the country and later is sent to a coeducational institution where she assumes the dress and manners of a girl once more. Time passes and Jerry, the girl graduate, goes to Mexico to join her benefactor who is surprised to find that his Jerry is really a girl. The opposition of Girard's sister determines Jerry to leave Girard and Mexico, but she gets no further than the railroad station, for Girard has fallen in love with her and prevents her from leaving.