Whether or not the number of songs circulated from Tin Pan Alley between 1939 and 1945 was greater than during the First World War is still debated. In his book "The Songs That Fought the War: Popular Music and the Home Front", John Bush Jones cites Jeffrey C. Livingstone as claiming that Tin Pan Alley released more songs during World War I than it did in World War II. Jones, on the other hand, argues that "there is also strong documentary evidence that the output of American war-related songs during World War II was most probably unsurpassed in any other war".