!["Birnbaum I (Pear Tree I)", 1978](https://img.artlogic.net/w_400,h_400,c_limit/exhibit-e/5e1f7ecca5aa2c6c639069eb/211231e9d583ef4daeada3fb82770fca.jpeg)
"Birnbaum I (Pear Tree I)", 1978
Oil, tempera on wood
Four parts, each:
98 1/2 x 67 inches
250 x 170 cm
GB 89
!["Untitled (Lettre International)", 1989](https://img.artlogic.net/w_400,h_400,c_limit/exhibit-e/5e1f7ecca5aa2c6c639069eb/86ea0e90b7f8cb27d0987a25edafa0c5.jpeg)
"Untitled (Lettre International)", 1989
Charcoal on paper
Twenty-two parts
Dimensions variable
ZGB 671-692
!["Untitled (Lettre International)", 1989](https://img.artlogic.net/w_400,h_400,c_limit/exhibit-e/5e1f7ecca5aa2c6c639069eb/94f205077f0bc26dbb044e9456343dcb.jpeg)
"Untitled (Lettre International)", 1989
Oil, charcoal on paper
14 1/2 x 11 inches
37 x 27.5 cm
ZGB 671
!["Akt und Flasche (Nude and Bottle)", 1977](https://img.artlogic.net/w_400,h_400,c_limit/exhibit-e/5e1f7ecca5aa2c6c639069eb/15198136fc78b09ef822d1669c3373fc.jpeg)
"Akt und Flasche (Nude and Bottle)", 1977
Oil, tempera on wood
Two parts, each:
98 1/2 x 67 inches
250 x 170 cm
GB 84
!["Untitled", 1992 Gouache on paper](https://img.artlogic.net/w_400,h_400,c_limit/exhibit-e/5e1f7ecca5aa2c6c639069eb/8a738458d5f38db740e2b3788f52e415.jpeg)
"Untitled", 1992
Gouache on paper
78 3/4 x 55 inches
200 x 140 cm
ZGB 1001
!["Nest", 1990 Oil on canvas](https://img.artlogic.net/w_400,h_400,c_limit/exhibit-e/5e1f7ecca5aa2c6c639069eb/610588c51eaba7ef2bc0fdb9701efcf0.jpeg)
"Nest", 1990
Oil on canvas
114 1/4 x 114 1/4 inches
290 x 290 cm
GB 389
!["Untitled", 1991 Pencil on paper](https://img.artlogic.net/w_400,h_400,c_limit/exhibit-e/5e1f7ecca5aa2c6c639069eb/ac7f212c754c3f8ba0f9d0cd02f3c783.jpeg)
"Untitled", 1991
Pencil on paper
34 x 24 inches
86 x 61.5 cm
ZGB 864
!["Untitled", 1991 Pastel, pencil on paper](https://img.artlogic.net/w_400,h_400,c_limit/exhibit-e/5e1f7ecca5aa2c6c639069eb/55369bcf721bd639b6ea5db7c8f46eba.jpeg)
"Untitled", 1991
Pastel, pencil on paper
34 x 24 inches
86 x 61.5 cm
ZGB 922
!["Serge", 1990 Oil on canvas](https://img.artlogic.net/w_400,h_400,c_limit/exhibit-e/5e1f7ecca5aa2c6c639069eb/2c8e639b94cd4bceee99d82c42687e35.jpeg)
"Serge", 1990
Oil on canvas
98 1/2 x 78 3/4 inches
250 x 200 cm
GB 392