- ·Horse, study
- ·1970
- ·21 cm
- ·Ink, paper
- ·00.156.13.
- ·Horse skull, study
- ·1973
- ·33 cm
- ·Ink, paper
- ·00.254.1.
- ·Horse skull, study
- ·1973
- ·40 cm
- ·Ink, paper
- ·00.254.2.
- ·Horse skull, study
- ·1973
- ·33 cm
- ·Ink, paper
- ·00.254.3.
- ·Horse skull, study
- ·1973
- ·33 cm
- ·Ink, paper
- ·00.254.4.
- ·Horse skull, study
- ·1973
- ·51 cm
- ·Ink, paper
- ·00.158.1.