What is the significance of Charlotte Delbo�s �Auschwitz and After� & Anne Frank's Diary to historians?

What is the significance of Charlotte Delbo�s �Auschwitz and After� & Anne Frank's Diary to historians? \ Order Description An essay in History is a reasoned argument based on evidence. write an essay of 1100 words in length. Use footnotes to indicate your sources and add a bibliography to the end of your essay. References should be in Oxford style and a bibliography divided into primary and secondary sources. It is expected that you refer to at least two primary sources and four secondary sources in the making of this essay.