ROBERT MORRIS IN NEW YORK, NOVEMBER 2013.

ROBERT MORRIS’S UNTITLED, 2010, FELT. COURTESY OF SONNABEND GALLERY, NEW YORK.

ROBERT MORRIS'S UNTITLED (BOX FOR STANDING), 1961, FIR. COURTESY OF SONNABEND GALLERY, NEW YORK.

PHOTOS TAKEN DURING ASSEMBLY OF THE "ROBERT MORRIS: RECENT WORKS" EXHIBITION AT THE WHITNEY MUSEUM OF AMERICAN ART, NEW YORK. 1970.

MORRIS AND WORKERS ASSEMBLE UNTITLED, CONCRETE, STEEL, TIMBERS. PHOTO: GIANFRANCO GORGONI/ CONTACT PRESS IMAGES.

INSTALLATION SHOT, PHOTO:RUDY BURCKHARDT © 2013 RUDY BURCKHARDT ESTATE/ARTISTS RIGHTS SOCIETY (ARS),NEW YORK.

MORRIS OPERATING FORKLIFT.PHOTO:GIANFRANCO GORGONI/CONTACT PRESS IMAGES.

THIS PAGE: UNTITLED, 2010, FELT. COURTESY OF SONNABEND GALLERY, NEW YORK.

UNTITLED (POSTER FOR "LABYRINTH-VOICE-BLIND TIME"), 1974, OFFSET LITHOGRAPH ON PAPER. COURTESY OF SONNABEND GALLERY, NEW YORK.

BLIND TIME III, 1985, GRAPHITE ON PAPER. COURTESY OF SONNABEND GALLERY, NEW YORK.