- 9 July 1965–27 Nov. 1967 (Creation)
Level of description
Extent and medium
Name of creator
Immediate source of acquisition or transfer
Content and structure area
Scope and content
Includes EB1, EB2, EB3, EB4, and EB5. EB4 was put into culture on 13 December 1965 and EB5 on 12 January 1966.