Final answer:
The provided references do not relate to the 'To Kill a Mockingbird' novel, hence a specific answer about what Jem has to do for Dill is not possible.
Step-by-step explanation:
The question likely pertains to an event from the novel To Kill a Mockingbird by Harper Lee, where Jem is dared to do something by Dill. However, the references provided do not relate to the novel or this event, leading to an inability to provide a specific answer to what Jem will have to do to get Dill's copy of The Grey Ghost. As the references provided appear to be from different texts, an accurate answer to the student's question based on the given fragments from various literary pieces cannot be determined.