Columbia subject headings:
Poets, American--19th century--Biography--Dictionaries.
Poets, American--20th century--Biography--Dictionaries.
Harvard subject headings:
American poetry--19th century--Bio-bibliography--Dictionaries.
American poetry--19th century--Dictionaries.
American poetry--20th century--Bio-bibliography--Dictionaries
American poetry--20th century--Dictionaries.
Poets, American--19th century--Biography--Dictionaries.
Poets, American--20th century--Biography--Dictionaries.
Reference works
Princeton subject headings:
Dictionaries.
Poets, American--19th century--Biography--Dictionaries.
Poets, American--20th century--Biography--Dictionaries.