The phrase isn't as easy to define as one might have hoped.... There is an intuitive division of types of history in which a lot of us engage without questioning it much. If you tell me, " I'm writing a political history of the United States in the late 19th century" I expect you are working on Boss Tweed, Grover Cleveland, Ida B. Wells. "I'm writing a cultural history of the United States in the late 19th century." Ah, then I would love the chance to quiz you about the Centennial Exposition in Philadelphia, Thomas Nast's cartoons and the music of Victor Herbert. I've posted a photo of Victor Herbert here. To get a bit closer to what I want -- suppose you are tell me you are writing a history of economics, as a field of study, in the US during this period . Delightful! Nothing like a good discussion of Henry George, Herbert Spencer, John Bates Clark and Thorstein Veblen. But then we get back to where we began. What does an economic histor...