Historical rankings of presidents of the United States former director of the University of Maryland's African American Leadership Institute, stated that Presidents ranked by how each one balanced the interests of majority interests and the interests of excluded groups was practical in respect to American debate on racial politics. Presidents have traditionally been ranked on personal qualities and their leadership ability to solve problems that move the nation in a positive direction. Walters stated there was a qualitative difference between white and African American intellectuals in evaluating presidents. In the 1996 "New York Times" poll by Arthur M. Schlesinger Jr., 31 white historians and one black historian ranked
How Many More Times Wolf's "How Many More Years" (1951), as well as other songs by blues musicians he admired at the time of recording. In 1970, "How Many More Times" was dropped from Led Zeppelin's typical setlist, although they continued to perform it on occasion until the early stages of their 1975 North American tour, when it was re-introduced in full as a result of Jimmy Page's injured finger, which temporarily prevented him from playing the more challenging "Dazed and Confused". In a contemporary review for "Led Zeppelin" on release, John Mendelsohn of "Rolling Stone" called "How Many More Times" as the album's