Columbia subject headings:
Harvard subject headings:
Authors, American--19th century--Correspondence
Authors, Scottish--19th century--Correspondence
Carlyle, Thomas, 1795-1881. Correspondence
Emerson, Ralph Waldo, 1803-1882. Correspondence
Princeton subject headings:
Carlyle, Thomas, 1795-1881.
Emerson, Ralph Waldo, 1803-1882.