The preface to “Billy, the Boy Naturalist” (Murrill 1918a) was dated February 14, 1918, and began: “In November, 1917, when the author was confined to his room for a few days, he decided to try the experiment of recalling incidents of his early youth, forty years and more ago [49 to be exact]. In short, he was about to deliver stored memories and was proud of his ability to do so.