Columbia subject headings:
Harvard subject headings:
Ink--Early works to 1800.
Ink--Experiments--Early works to 1800.
Paleography--Early works to 1800.
Writing--Materials and instruments--Early works to 1800.
Princeton subject headings:
Ink--Experiments--Early works to 1800.
Paleography--Early works to 1800.
Writing--Materials and instruments--Early works to 1800.