Delta 1900 (McDonnell Douglas)

The Delta 1900 is a non-reusable, inactive launch vehicle manufactured by McDonnell Douglas. It undertook its inaugural launch on 12/16/1973.

The Delta 1000 series (also referred to as Straight-Eight) was an American expendable launch system which was used to conduct eight orbital launches between 1972 and 1975. It was a member of the Delta family of rockets. Several variants existed, differentiated by a four digit numerical code.