Let it Snow!

The weather outside is frightful, But the library is so delightful, And since we no other place we want to go, Let it snow, Let it snow, Let it snow! Your wish has come true. A freak winter storm has hit your school; you have 45 minutes to get home before the roads will be shut down; however, the librarian left early and locked the doors. Hurry up and solve the clues to unlock the doors so that you can get home before it's too late and be stuck in the library until after the storm. (Which may be a good thing!)