The Trouble Buster.

Soon after arriving in the U.S., Romanian immigrant Franz Libelt dies, leaving his daughter Michelna an orphan. The girl is befriended by newsboy Blackie Moyle, who invites her to share his home, which is a large piano box in a vacant lot. After he teaches her to be a "newsie," she cuts her hair, dresses as a boy, and changes her name to Mike. When Blackie is blinded while protecting her from a thief, Mike is forced to find a way to support them both