Columbia subject headings:
Harvard subject headings:
Merck, Johann Heinrich, 1741-1791--Biography.
Merck, Luise, 1743-1810--Biography.
Princeton subject headings:
Goethe, Johann Wolfgang von, 1749-1832--Friends and associates.
Merck, Johann Heinrich, 1741-1791.
Merck, Luise, 1743-1810.