Tomie dePaola's glorious paintings are as luminous as the farolitos that light up on the Plaza in Santa Fe for the procession of Las Posadas , the tradition in which Mary and Joseph go from door to door seeking shelter at the inn on Christmas Eve.This year Sister Angie, who is always in charge of the clebration, has to stay home with the flu, and Lupe and Roberto, who are to play Mary and Joseph, get caught in a snowstorm. But a man and a woman no...