Exhibit A [not Ex.Hibit A] and Exhibits B, C D etc are terms used in courtroom proceedings to describe an object, weapon or pieces of evidence that are associated with the case being heard at the time. In this case it could refer to a photo of Woody or his corpse/remains. It is hard to tell, as you haven't supplied any more details.

In a court of law, when evidence is presented to the judge, it is labeled as "Exhibit A" or "Exhibit B" (through all the letters of the alphabet.) In this case "exhibit" is a legal term for a thing that is entered into evidence. In normal speech, an exhibit would be something put on display. You could attend an art exhibition, which would be a collections of paintings at a museum, for example.