1900: A New Book?
J.G. is now studying Architecture at Harvard. In this letter, he responds to a book suggestion from his mother: "The V. le Duc seems like a great deal but I would like it very much as it is the very best thing of the kind." Eugène-Emmanuel Viollet-le-Duc was a French architect and theorist. It is believed that after J.G.'s death Emily Sibley Watson gave his architecture books to Claude Bragdon. From the letter, we don't know which of Viollet-le-Duc's many books Emily might have considered purchasing for her son.
In this letter, J.G. asks his mother to "please send me a half a dozen of the Mock pictures." Perhaps this was the picture he is referring to.