We
were fortunate enough to have a few dealings with Walt's best friend, Dr.James Lowe (who almost single handedly wrote the book on postcards), from an ebay transaction with his son and board member, Jeff Lowe. I believe Mr.Lowe was with Walt when he passed away and/or also might have performed the memorial service for him. As I recall Mr.Lowe was in the ministry too. (Don't hold my feet to the fire for any of this, this is what I remember him telling me, but it was several years ago). We
were able to acquire Mr.Corson's lists of cards and here is a letter he had written to him. This "hoard" was also where the oft shown Jefferson Burdick letter(s) came from. I think all of these guys were the first real card collectors in America, along with Lionel and the other early collectors previously mentioned in another thread.
(shown many times but still apropos and neat)