Really filling out the pages of those chapters is always a puzzle. The photograph is a two-dimensional image of a three dimensional object, and just by looking at a photograph, you cannot tell exactly where the trees were. Hopefully, in the future, we will be able to look at a little bit of the evolution of the history of those tree plants since Jefferson's death. That is an important plan, and it is one way through scientific and modern means of trying to decipher some of these riddles. And archaeology, of course, is another way of doing it.
New documents come to light, too.
A new page of Jefferson's Garden Book came to light about ten years ago. Just a marvelous thing to discover. You think you know it all in terms of landscape and gardening from the documentation, but these things do surface. Contemporary descriptions of Monticello also surface from time to time. They provide a very clear window in some ways to what life was like during that period.