Earthworks,  Spiral Hill (Emmen, Holland) and  Amarillo Ramp (Amarillo, Texas)
name: label: Collection Creator
content: Holt, Nancy, 1938-2014
setName: label: See more items in
content: Nancy Holt Estate records
label: See more items in
content: Nancy Holt Estate records / Series 12: John Weber Gallery Records Concerning Robert Smithson / 12.3: Smithson Master Slides of Sculpture Works
unitdate: label: Date
content: 1971, 1973
container: label: Container
content: Box 2, Folder 24
dataSource: label: Archival Repository
content: Archives of American Art
objectType: label: Type
content: Archival materials