Audrey I, 1966 porcelainized aluminum & stainless steel 8 x 9.4 x 6.6 feet 2.4 x 2.8 x 2m Private Collection

Audrey II, 1966 porcelainized aluminum & stainless steel 8 x 15.3 x 8 feet 2.4 x 4.6 x 2.4m Private Collection

Avenue K, 1968 aluminum & stainless steel 20 x 20 x 60 feet 6 x 6 x 18.3m Collection: City of Hannover, Germany

B-Tree, 1981 stainless steel 20 x 32 x 30 feet 6 x 9.5 x 9m Collection: National Institutes of Health, Bethesda, MD

City Boots, 1968 stainless steel 9 x 9 x 12 feet 2.7 x 2.7 x 3.6m Collection: J. Patrick Lannon Foundation

Coronation Day, 1980 stainless steel 20 x 20 x 20 feet 6.5 x 6.5 x 6.5m Collection: City of Buffalo, Buffalo, NY

Dragon, 2000-03 stainless steel 30.5 x 31 x 12 feet 9.3 x 9.4 x 3.6m

E.C. Column, 1969-81 aluminum & stainless steel 42 x 11 x 9.5 feet 14 x 4 x 4m Exhibition: Albright-Knox Art Gallery

Easy-K, 1970 aluminum & stainless steel 20 x 20 x 100 feet 6.5 x 6.5 x 32m Exhibition: Sonsbeek ‘70, Arnhem, Holland

Easy Landing, 1977 stainless steel 30 x 85 x 65 feet 10 x 25 x 20m Collection: City of Baltimore, Baltimore, MD

Equilateral Quivering Tower, 1973-92 brushed-chrome-brass & stainless steel 102 x 42 x 36 inches 259 x 106 x 92cm

Fair Leda, 1969 stainless steel 12 x 10 x18 feet 3.6 x 3 x 5.5m Collection: Nelson Rockefeller Estate

Forest Devil, 1975-77 17 x 35 x 25 feet 5 x 10.5 x 7.5m Collection: Museum of Art, Carnegie Institute, Pittsburgh, PA

Four Chances, 1982 stainless steel 9.4 x 11.4 x 7.6 feet 2.8 x 3.5 x 2.3m Collection: Albright Knox Museum, Buffalo, NY

Four Module Piece, 1968 aluminum & stainless steel 18 x 40 x 40 feet 5.5 x 12 x 12m Collection: City of Iowa City, Iowa City, IA

Free Ride Home, 1974 aluminum & stainless steel 30 x 60 x 60 feet 10 x 20 x 20m Collection: Storm King Art Center, Mountainville, NY

Landing, 1970 stainless steel 7.6 x 9.25 x 32.5 feet 2.33 x 9.9 x 2.82m Wakayama Prefecture Museum, Wakayama, Japan

Mozart I, 1982 stainless steel 24 x 24 x 30 feet 7 x 9 x 9m Collection: Stanford University, Palo Alto, CA

Needle Tower, 1968 aluminum & stainless steel 60 x 20 x 20 feet 18.2 x 6 x 6m Collection: Hirshhorn Museum & Sculpture Garden, Washington, D.C.

Needle Tower II, 1969 aluminum & stainless steel 90 x 18 x 18 feet 30 x 6 x 6m Collection: Kröller Müller Museum, Otterlo, Holland

Newport, 1968 stainless steel 12 x 9 x 9 feet 3.6 x 2.7 x 2.7m Collection: M. Margulies, Coconut Grove, FL

Northwood, 1969 painted steel & stainless steel 15 x 15 x 20 feet 4.6 x 4.6 x 6m Collection: Northwood Institute, Cedar Hills, TX

Osaka, 1970 stainless steel 32 x 16 x 16 feet 10 x 5 x 5m Japan Iron & steel Federation, Kobe, Japan

Rainbow Arch , 2001 aluminum & stainless steel 7 x 12.6 x 2.6 feet 2.1 x 3.8 x 1m

Sleeping Dragon, 2002-03 aluminum & stainless steel 10 x 72.5 x 16 feet 3 x 22.1 x 4.8m

Soft Landing, 1975-77 aluminum & stainless steel 17 x 63 x 45 feet 5 x 19.2 x 14m Exhibition: Berlin Nationalgalerie, Berlin, Germany

Sun River, 1967 stainless steel 10.5 x 8 x 9.5 feet 3.2 x 2.5 x 9m Collection: Whitney Museum of American Art

Tri-Core Column, 1974 aluminum & stainless steel 88.25 x 35.5 x 33.5 inches 224.2 x 90.2 x 85.1cm

Triple Crown, 1991 stainless steel 43 x 85 x 78 feet 13 x 26 x 23m Collection: Hallmark, Inc. Kansas City, MO

T-Zone Flight, 1995 stainless steel 16 x 49 x 30 feet 5 x 11.9 x 9.4m JT Building, Toranomon, Tokyo, Japan

V-X, 1968 stainless steel 10 x 14 x 14 feet 3 x 4.3 x 4.3m Columbus Museum of Art, Columbus, OH

Wing I, 1992; Ed. 4 stainless steel 7 x 10 x 11.7 feet 2 x 3 x 3.6m Private collection