December 31, 2021 Hidden on: 12/31/2021 Title: The Marvelous Land Of Oz Author: L. Frank Baum Tracking Number: 5064 Location: Webster Library, Manhattan, New York City, New York United States Clue: 2,5,8,9,14,4 16,15,20 15,21,20,19,9,4,5 12,9,2,18,1,18,25.