The letters of Carl Sandburg / Edited by Herbert Mitgang. Sandburg, Carl 1878-1967. Mitgang, Herbert ed. Sandburg, Carl 1878-1967. Sandburg, Carl, 1878-1967 Correspondence. Poets, American 20th century Correspondence. Biographers United States Correspondence. 928.1 SAL New York : Harcourt, Brace & World. 1968. 1968. 1968 Text xiv, 577 p. ; eng United States