I came across an article titled Read E. B. White's Poignant Explanation For Writing Charlotte's Web by Robert T. Gonzalez. In the article, Gonzalez writes:
One of the greatest children's books ever written, E.B. White's Charlotte's Web is notable not just for its lovely prose but for its masterful handling of themes on death and dying. In a letter written to his editor a few weeks before the book's publication, White explains why a peculiar truth about farms makes them such appropriate spaces for exploring the concept of death, and how this moved him to write the book in the first place.Click on the top link to read E. B. White's letter to his editor!!