A knife sheath made of caribou skin with a birch bark stiffener inside. It has a cotton tape suspension strap. Two loops have been sewn on the side with brown linen thread to hold its knife - AAA2635 for display.

It is part of a collection of ethnographic material made by Admiral Sir George Back (1796-1878). Back took part in three overland journeys to explore the north coast of America in 1819-22, 1825-27 and 1833-35. He travelled north via the network of rivers and lakes on the Canadian Shield stopping at Hudson Bay Company trading posts where he had the opportunity to acquire this type of material which relates to the eastern subarctic - it is possibly Cree. Part of his collection was bequeathed to Greenwich Hospital in 1900 by Mrs Eliza Back, widow of Sir George's nephew - the Reverend Henry Back.