First Thanksgiving

It’s the day before Thanksgiving, your teacher has assigned a group Thanksgiving Research Project. Your group asked to go to the library, however, when you arrived, the door was locked. You examine the door and see that there are four locks attached to it. If you can unlock the door, you'll be able to complete your assignment on time! Work together to solve the puzzles to open the library door. Hurry up, you better unlock the locks so that you can complete your assignment and get home for Thanksgiving Break!