DeweyDecimalWebquest

I Am Locked In The Library! **   Help! Help! Oh no -- you were so involved in reading your book that you didn't know the library closed. It is already dark outside and it is a cold and dreary night. Here you are -- all alone in the library. But WAIT -- there is a way to get the key to open the door. CAN YOU MEET THE CHALLENGE?
 * HELP!