Authorities Puzzled at Mysterious Craft Seen Above Superior.
DULUTH, Minn., March 1. Following reports that the mysterious aeroplane that has been hovering over Duluth and Superior [Wisconsin] was again seen Tuesday night [February 29], Commissioner Silberstein, head of the Duluth Safety Division[,] announced that instructions will be given the police to be on the lookout for the air machine.
That an aeroplane really is flying over the American head of the lakes during the early hours of the morning is admitted by police here and in Superior.
Three men were aboard the big plane when it was seen over Superior.