Igaro (from the Systems Dimensions Limited Portfolio)

signed lower right in graphite numbered P.A. lower left in graphite titled center verso in graphite provenance: from the Grace Hertlein Collection and Archives The portfolio was commissioned by Systems Dimensions Limited, an early Canadian computer services firm, in 1973 as a way of promoting computers not only as a tool to expand industrial and […]

Manage eu Vert # 1

signed and titled center verso in brown ink stamped with A.R.T.A stop center verso in black ink provenance: from the Grace Hertlein Collection and Archives

Espaces Aléatoires 1 (Random Spaces 1)

signed lower right in graphite dated and numbered 24/25 lower left in graphite signed and titled center verso in brown ink stamped with A.R.T.A stop center verso in black ink provenance: from the Grace Hertlein Collection and Archives

Espaces Aléatoires 2 (Random Spaces 2)

signed lower right in graphite dated and numbered 24/25 lower left in graphite signed and titled center verso in brown ink stamped with A.R.T.A stop center verso in black ink provenance: from the Grace Hertlein Collection and Archives

Composition

signed lower right in graphite numbered 38/125 lower left in graphite signed, titled, dated, and software inscribed upper left corner verso in black ink software: TRPL via FORTRAN provenance: from the Grace Hertlein Collection and Archives