Introduction to the Dag Hammarskjöld Library: The Dag Hammarskjöld Library is located in the southwest corner of the headquarters. It was a gift from the Ford Foundation and was completed on November 16, 1961. , the name of the museum is in memory of the late Secretary-General. The Dag Hammarskjöld Library is primarily used by Secretariat staff, members of missions to the United Nations, permanent missions and other official users.