1926  [. . . it was a piece of blue pasteboard, absolutely blank, handed to a girl by the police . . . and it meant that she must get out in 24 hours.]
1938  She was notorious for "rolling," and finally the police "got the goods on her," and she received a summons, which she knew meant the blue ticket.
1958  A culprit was either given a "blue ticket" to leave town, or he was sentenced to hard labour on the government woodpile.