Columbia subject headings:
Harvard subject headings:
Friesland (Netherlands)--History, Military--Sources.
Frisians--Travel--History--18th century--Sources.
Netherlands--Armed Forces--Officers--Travel--History--18th century--Sources.
Sloterdijck Family.
Soldiers--Netherlands--Friesland--History--Sources.
Voyages and travels--History--18th century.
Princeton subject headings:
Frisians--Travel--History--18th century--Sources.
Netherlands. Koninklijke Landmacht
Soldiers' writings.