Columbia subject headings:
Claudius, Matthias, 1740-1815--Friends and associates.
Harvard subject headings:
Claudius, Matthias, 1740-1815--Friends and associates.
Jacobi, Friedrich Heinrich, 1743-1819--Friends and associates.
Princeton subject headings:
Claudius, Matthias, 1740-1815--Friends and associates.
Jacobi, Friedrich Heinrich, 1743-1819--Friends and associates.