Continuity mistake: In the scene where Jo comes home from New York and sees Beth sick on the sofa, she gives Beth a music box. Beth opens the lid to the music box and in the next shot, the camera is pulled back and Beth opens the lid again.
Visible crew/equipment: When Marmee checks on the girls while they pretend to be asleep, the oil lamp she picks up has an electric cord attached to it. (00:23:39)