Dana Yoemans sent us the following message via email.
"My mother gave me an envelope pertaining to Peter Brown. I looked him up and was surprised to see that he still had a fan base (because the envelope was dated 1963). I have enclosed pics of the envelope's contents if you want to share them on your web site. I thought it was neat. It also came with a picture of Peter that my mother said that she still has somewhere."
Thanks to Dana and her mother for sharing.