The Pulitzer Prizes"In writing his 1904 will, which made provision for the establishment of the Pulitzer Prizes as an incentive to excellence, Pulitzer specified solely four awards in journalism, four in letters and drama, one for education, and four traveling scholarships. In letters, prizes were to go to an American novel, an original American play performed in New York, a book on the history of the United States, an American biography, and a history of public service by the press...the prizes since their inception in 1917, has been revised frequently. The Board, later renamed the Pulitzer Prize Board, has increased the number of awards to 21 and introduced poetry, music, and photography as subjects."