A Land Art 1st for the National Register of Historic Places - 4Culture
The Observatory by Robert Morris (1971) – SOCKS
Public Art: Robert Morris “Earthwork At Johnson Pit”35mm Slide | eBay
Land art artist - Robert Morris
Observatorium (Robert Morris) - Sculpture Garden
Washington Trust for Historic Preservation — Robert Morris Earthwork
Robert Morris, Observatory, 1970-1977 | Land art, Landscape, Public art
Glass-Walled Labyrinth / Robert Morris | ArchDaily
Land Art (Can You Dig It?) | Art for Sale | Artspace
Glass-Walled Labyrinth / Robert Morris | ArchDaily
Observatory (1977)
Robert Morris, “Untitled Earthwork (Johnson Pit #30)” (1979) | Walking as Artistic Practice
The Flevoland Observatorium - Senses Atlas - landart
Land art: Art that descended from the pedestal - Newspaper - DAWN.COM
The Observatory by Robert Morris (1971) – SOCKS
Blog - What is land art? – Artalistic explains the Earthworks movement
Earth Art - Land Art Installation - The Art History Archive
ART-TRIBUTE:40 years of Land Art in Flevoland – dreamideamachine ART VIEW
Investigations: The Expanded Field of Writing in the Works of Robert Morris - The Time of the Earthworks - ENS Éditions
Robert Morris - An Artist and Sculptor Like No Other | Ideelart
The Observatory by Robert Morris (1971) – SOCKS
Art and the Landscape | TCLF 2014 Landslide
Robert Morris - 7 Articles | Widewalls
