His 1897 monograph was a landmark work in American constitutional history and the inaugural recipient of the American Historical Society 's Justin Winsor Prize .
His 1897 monograph is the Proposed Amendments to the Constitution of the United States During the First Century of Its History .
His 1897 monograph , The Proposed Amendments to the Constitution of the United States During the First Century of Its History , was a landmark work in American constitutional history and the inaugural recipient of the American Historical Society 's Justin Winsor Prize .