This was a great idea: teaching children history by letting them see it through the eyes of well-known historical figure's pets - and at the same time, in this case, allaying fears a child might have about a change or even upheaval in their life - such as moving to a new house.
I'm not a fan of Jefferson and see no reason for deface on Mount Rushmore(!), but whether you like an historical figure or not has no bearing on whether it's worth learning something about them, and I think this is a charming way to do it: seeing Jefferson through the eyes of his French chien bergère de Brie (sheepdog of the brie region - the home of brie cheese).
Beautifully and artistically illustrated by the talented Fátima Stamato (I loved her image of Buzzy on page six, at the start of chapter two, which is monitor-screen wallpaper-worthy!), this book tells of the worries of Buzzy, when she learns that Jefferson is going to become the new president (in 1801) and has to live in the President's House, now much more commonly known as The White House.
Buzzy (which actually was the name of a dog owned by Jefferson) is afraid of moving and leaving her beloved farm and friends behind (a horse, another dog, and a mockingbird Jefferson got to replace an earlier one he had bought from a slave), but when she realizes she can bring along her favorite pillow, and her fetch toy, and water bowl, and set them up where she wants in this new residence, she feels a lot more comfortable. Some things change, but others remain much the same, and finally she's happy with her new home.
The author rather glosses over the fact that Jefferson had been vice president for the previous four years (a position he got through a mistake in the constitution!), so while he had not been resident in the White House (vice presidents lived in their own home until relatively recently, when a government residence was opened for them) he certainly knew it quite well, both inside and out. That doesn't mean Buzzy ever visited, of course, so this was more than likely a very new situation for her.
The author also glosses over the fact that Jefferson soon became a breeder of the variety of dog (indeed, Buzzy gave birth on the trip back to the US, so Jefferson actually arrived here with three dogs). Buzzy was not the only such dog at Monticello, but to have multiple "Briards" running around would just confuse things as would it have done to depict Buzzy more accurately as an outdoor dog, rather than living in the house. Dogs back then were considered working animals (and even pests in livestock country, the ownership of which was taxed), so the mockingbird, "Dick" was much more of a pet to Jefferson than Buzzy was, but again, this makes for a better story for children, even if somewhat inaccurate, so overall I was very pleased with this book, and I recommend it as a worthy read for the intended age range (4 - 8yrs).