Michael Fein, author of the excellent book Paving the Way: New York Road Building and the American State, 1880-1956, has a very sharp review of The King’s Best Highway in the April 2012 issue of the journal Technology and Culture. He has some kind words for the book —
There is much to admire in The King’s Best Highway, Eric Jaffe’s “lost history” of the Boston Post Road (BPR). In brisk style, Jaffe whisks the reader in a tour of the signal events that have unfolded along this old route ever since the age of early British settlement. He has a strong feel for gripping anecdotes and the rich characters—ranging from John Winthrop Jr. to P. T. Barnum—whose lives intersect the road in intriguing ways.
— and closes with a thoughtful question: “What does it say about Americans that we look to the highway—with all that it conjures—and find our own reflection?”