Unger, Irwin . These United States: the questions of our past Vol.I:To 1877 / Textual Documents Irwin Unger. - 1st ed / - New Delhi : Prentice-Hall of India(Pvt Ltd) , 1986. - xii,433p. : ill. ; 32cm. . Index ISBN: 0-13-915109-5 Subjects--Index Terms: History- United States Dewey Class. No.: 973 / Un 3 Th