A few weeks ago Conan O'Brien mentioned a letter he had written to E.B. White as a high school junior and the letter White had written back. O'Brien still has that framed letter from White. It turns out that the the Cornell Archives still has the letter that O'Brien wrote to White and dug it out.
Yay Archives!
https://twitter.com/ConanOBrien/status/1202706686202396672