Stahr's book on John Jay is absolutely first-rate. Surprisingly, Stahr mentions that it has been almost 70 years since someone has done a full biography on Jay. This makes the book all that more appreciated.
In short, although Jay was not as important and revered and talked about as Washington, Jefferson, and Hamilton, he clearly played a major part in launching this nation for over 25 years, so much so, that one wonders how he slipped under the radar screen. Here goes....He was a member of the Continental Congress in 1774 and 1775, and was President of it in 1779. He lead the peace negotiation in 1782-3 at Paris which resulted in a very favorable treay for the US. From 1784 till 1790 he was Secretary of Foreign Affairs for the Confederacy, but more importantly, during this most fragile period in our history when most of the members failed to attend and rotated out after one year, he gave continuity and competency to the new national government. He was the most important figure in getting a very reluctant New York State to approve the new Constitution. He was the nation's first Supreme Court Chief Justice. He was governor of New York State for two terms. There's more.
Furthermore, everyone in his times and now agrees that he handled all these tasks with competency to a fault, being admired by friends and opponents alike. Like Hamilton, he was a person who got things done, but, unlike Hamilton, he seemed to get along with everyone.
The writing and research are great. One gets not only a feeling for who Jay was as a person, but also what his place in history is. It's not a profound book or a book that comes to new conclusions and insights, but a book that exposes Jay's life for what he did and what he was worth. It brings together Jay's lifelong multitude of accomplishments. From the cover jacket, the author appears to be a lawyer/novice at writing books. Great first effort!
I'd have to say that this is probably a book for people who already know something about the beginnings of the United States and are looking to fill in the gaps. Jay was clearly a team player, and this book focuses on Jay and not the overall picture.
Lastly, several years ago I visited the Jay homestead in Rye, New York. It's a beautiful piece of land by the water. Apparently the building itself just barely escaped the wrecking ball, hard to believe. I'd recommend a visit.