in what ways does it matter that stories about the holocaust ie the 3 short stories were written decades apart

In a discussion of American creative writers writing the Holocaust (i.e. the three stories above), in what ways does it matter that the stories were written decades apart? What might that say about the changing nature of Holocaust culture in America? Can these stories tell us anything about the ways in which American attitudes toward the Holocaust shifted? Be very specific with examples from the stories. Be sure to address all of these questions in your 2-3 page formal essay.