Perhaps no American president has seemed less suited to his office or his times than Calvin Coolidge. The taciturn New Englander became a vice presidential candidate by chance, then with the death of Warren G. Harding was thrust into the White House to preside dourly over the Roaring Twenties. Robert Ferrell, one of America's most distinguished historians, offers the first book-length account of the Coolidge presidency in thirty years, drawing...