Columbia subject headings:
Sandburg, Carl, 1878-1967.
Harvard subject headings:
Biographers--United States--Biography.
Poets, American--20th century--Biography
Sandburg, Carl, 1878-1967
Princeton subject headings:
Biographers--United States--Biography.
Poets, American--20th century--Biography.
Sandburg, Carl, 1878-1967.