Columbia subject headings:
Cowper, William, 1731-1800--Bibliography.
Cowper, William, 1731-1800.
Harvard subject headings:
Cowper, William, 1731-1800--Bibliography.
Cowper, William, 1731-1800.
Princeton subject headings:
Cowper, William, 1731-1800--Bibliography.
Cowper, William, 1731-1800.