Re member when you could write a letter to a movie star, politician, or hero and get a response? My house is filled with framed letters to me from, amongst others, Jackie Kennedy, Elizabeth Taylor, James Stewart, futurist writer Isaac Asimov, Robert Goulet, the Lady-in-Waiting to Her Royal Highness, and Mr. Rogers himself. I wrote to him when my son was 2 years old, hoping he would write back. I thought a letter from him would be a nice remembrance for David, an avid fan of "Mister Rogers' Neighborhood," the pre-school television series that ran from 1968-2001. I love it when Mr. Rogers writes, " You are fortunate to have a mother who cares so much about what is important to you." With the two Mister Rogers films out in the past two years -- "A Beautiful Day in the Neighborhood" (film, 2019) and "Won't You Be My Neighbor" (documentary, 2018) -- we especially prize this letter. It's like having something from the cool guy i...