- 1966
- Catalogue raisonné no. 145
- Artist's CR 135
- Aspen, Colorado
- Acrylic on aluminium and chrome on brass, slate base
- Edition: 6)
- 27.5x15x6inches/70x38x15cm
- 1966
- Catalogue raisonné no. 146
- Artist's CR 136
- Aspen, Colorado
- Acrylic on aluminium, chrome on brass, slate base (white marble base and repaint November 1968)
- 70x17x9inches/178x43x23cm
- 1966
- Catalogue raisonné no. 147
- Artist's CR 137
- Aspen, Colorado
- Acrylic on aluminium and chrome on brass, petrified wood base
- 21.875x5x3inches/56x13x8cm
- 1966
- Catalogue raisonné no. 148
- Artist's CR 138
- Aspen, Colorado
- Bent galvanised iron, acrylic on aluminium and chrome on brass, slate base
- 1966
- Catalogue raisonné no. 149
- Artist's CR 139
- Aspen, Colorado
- Acrylic on aluminium and chrome on brass, slate base
- 42x12x6inches/107x30x15cm
- 1966
- Catalogue raisonné no. 150
- Artist's CR 140
- Aspen, Colorado
- Bent, galvanised iron, acrylic on aluminium and chrome on brass, slate base
- 1966
- Catalogue raisonné no. 151
- Artist's CR 141
- Aspen, Colorado
- Acrylic on aluminium and chrome on brass, slate base
- 32x8x5inches/81x20x13cm
- 1966
- Catalogue raisonné no. 152
- Artist's CR 142
- Aspen, Colorado
- Acrylic on bent, galvanised sheet and chrome on brass, slate base
- 39.5x9x20inches/100x23x51cm
- 1966
- Catalogue raisonné no. 153
- Artist's CR 143
- Aspen, Colorado
- Acrylic on aluminium
- 1966
- Catalogue raisonné no. 154
- Artist's CR 143a
- Aspen, Colorado
- Acrylic lacquer on aluminium, chrome on brass
- 36x96inches/91x244cm
- 1966
- Catalogue raisonné no. 155
- Artist's CR 144
- Aspen, Colorado
- Acrylic and collaged chrome paper on bent, galvanised iron
- 14x19inches/36x48cm
- 1966
- Catalogue raisonné no. 156
- Artist's CR 145
- Aspen, Colorado
- Acrylic on bent, galvanised iron
- 21x28inches/53x71cm
- 1966
- Catalogue raisonné no. 157
- Artist's CR 146
- Aspen, Colorado
- Acrylic on bent, galvanised iron
- 15x18.5inches/38x47cm
- September 1966
- Catalogue raisonné no. 158
- Artist's CR 147
- New York City
- Chrome on brass and acrylic on aluminium
- 81x1x9inches/206x3x23cm
- September 1966
- Catalogue raisonné no. 159
- Artist's CR 148
- New York City
- Chrome brass and acrylic on aluminium
- 94x1x20inches/239x3x51cm
- September - November 1966
- Catalogue raisonné no. 160
- Artist's CR 149
- New York City
- Chrome brass and acrylic on aluminium
- 36x0.5x8inches/91x1x20cm
- November 1966
- Catalogue raisonné no. 161
- Artist's CR 150
- New York City
- Acrylic on aluminium and chrome on brass, slate base
- 86x42x12inches/218x107x30cm
- Fall 1966
- Catalogue raisonné no. 162
- Artist's CR 151
- Aspen and New York City
- Acrylic on aluminium and chrome on brass, slate base
- 95x44x22inches/241x112x56cm
- Fall 1966
- Catalogue raisonné no. 163
- Artist's CR 152
- New York City
- Acrylic on aluminium and chrome on brass, slate base
- 83x9x7inches/211x23x18cm
- Fall 1966
- Catalogue raisonné no. 164
- Artist's CR 153
- New York City
- Acrylic on aluminium and chrome on brass, slate base
- 85x36x18inches/216x91x46cm
- Fall 1966
- Catalogue raisonné no. 165
- Artist's CR 154
- New York City
- Acrylic and tooling on bent aluminium
- 96x72inches/244x183cm
- December 1966
- Catalogue raisonné no. 166
- Artist's CR 155
- New York City
- Chrome on brass and acrylic on aluminium
- 107x36x20inches/272x91x51cm
- December 1966
- Catalogue raisonné no. 167
- Artist's CR 156
- New York City
- Acrylic lacquered aluminium and chrome on brass
- 85x42x21inches/216x107x53cm
- 1966
- Catalogue raisonné no. 168
- Artist's CR 157
- New York City
- Acrylic lacquered aluminium and chrome on brass
- 37x6.25x7inches/94x16x18cm
- 1966
- Catalogue raisonné no. 169
- Artist's CR 158
- New York City
- Chrome and enamel
- 26.5x9x10inches/67x23x25cm
- 1966
- Catalogue raisonné no. 170
- Artist's CR 159
- New York City
- Chrome on brass and acrylic on aluminium
- 32x6.75x9.25inches/81x17x23cm
- 1966
- Catalogue raisonné no. 171
- Artist's CR 160
- New York City
- Paint on aluminium and chrome on brass
- 85x36x18inches/216x91x46cm
- 1967
- Catalogue raisonné no. 172
- Artist's CR 161
- New York City
- Unknown media
- 71.5x7x6inches/182x18x15cm
- 1967
- Catalogue raisonné no. 173
- Artist's CR 162
- New York
- Paint on aluminium and chrome on brass
- 29x112x12inches/74x284x30cm
- 1967
- Catalogue raisonné no. 174
- Artist's CR 163
- New York City
- Lacquered aluminium, chrome-covered brass support, polished black marble base
- Edition: 22)
- 10.5x7x3inches/27x18x8cm
- 1967
- Catalogue raisonné no. 175
- Artist's CR 164a
- New York City
- Unknown media
- 1967
- Catalogue raisonné no. 176
- Artist's CR 164
- New York City
- Sheet and tube aluminium, riveted and brush-painted
- March - April 1967
- Catalogue raisonné no. 177
- Artist's CR 165
- New York City
- Plexiglas and chrome on aluminium, slate base
- Edition: 25)
- 11x7x3inches/28x18x8cm
- March 1967
- Catalogue raisonné no. 178
- Artist's CR 166
- New York City
- Plexiglas and chrome on aluminium, slate base
- 10.5x8.25x3inches/27x21x8cm
- March 1967
- Catalogue raisonné no. 179
- Artist's CR 167
- New York City
- Plexiglas and slate
- 3.5x11.5x1.5inches/9x29x4cm, 3 parts
- March 1967
- Catalogue raisonné no. 180
- Artist's CR 168
- New York City
- Plexiglas, aluminium and acrylic lacquer
- 23.75x86.5x9inches/60x220x23cm
- April 1967
- Catalogue raisonné no. 181
- Artist's CR 169
- New York City
- Formica-covered box, chrome on brass and painted Plexiglas
- 28.25x84x5.75inches/72x213x15cm
- 1966
- Catalogue raisonné no. 182
- Artist's CR 170
- New York City
- Unknown media
- 15x9x3.5inches/38x23x9cm
- 1966
- Catalogue raisonné no. 183
- Artist's CR 171
- New York City
- Unknown media
- 19x9x4.5inches/48x23x11cm
- 1966
- Catalogue raisonné no. 184
- Artist's CR 172
- New York City
- Unknown media
- March - April 1967
- Catalogue raisonné no. 185
- Artist's CR 173
- New York City
- Silkscreen on cotton
- 50x24inches/127x61cm, each, 48 parts
- January 1967
- Catalogue raisonné no. 186
- Artist's CR 174
- New York City
- Acrylic lacquer on bent aluminium
- January 1967
- Catalogue raisonné no. 187
- Artist's CR 175
- New York City
- Mixed media
- 7.5x10inches/19x25cm
- May 1967
- Catalogue raisonné no. 188
- Artist's CR 177
- New York City
- Plexiglas on aluminium base
- 1.75x10.5x2inches/4x27x5cm
- May 1967
- Catalogue raisonné no. 189
- Artist's CR 178
- New York City
- Plexiglas, marble base
- 16x12x4inches/41x30x10cm
- May 1967
- Catalogue raisonné no. 190
- Artist's CR 179
- New York City
- Plexiglas, marble base
- 34x4x3inches/86x10x8cm
- 1967
- Catalogue raisonné no. 191
- Artist's CR 180
- New York City
- Plexiglas on aluminium, marble base
- June 1967
- Catalogue raisonné no. 192
- Artist's CR 181
- New York City
- Lacquered aluminium and chrome on brass
- 130x28x79inches/330x71x201cm