signed and dated lower right in graphite titled and numbered E.A., C-5/V lower right verso in graphite provenance: from the Grace Hertlein Collection and Archives

no visible inscriptions provenance: from the Grace Hertlein Collection and Archives

signed, titled, and dated lower right in black ink provenance: from the Grace Hertlein Collection and Archives

inscribed: “Paul Shao + Ken Dunker, Dept. of Architecture, Iowa State University, Ames, Iowa 5001 Zup Tze 30” lower center verso in blue ink provenance: from the Grace Hertlein Collection and Archives

“Computer Graphik von G Nees gezeichnet auf GRAPHOTMAT ZUSE Z 90 (computer graphic by G Nees drawn on Graphomat Zuse Z 90)” printed in plotter ink below the image the drawing was produced at Siemens in Erlangen, Germany description of the artwork is courtesy of Heike Werner Gallery: “The typographical inscription indicates the model name […]

both are initialed and dated lower right in graphite signed, titled, and dated center verso of the right panel in graphite

initialed and dated lower right in graphite signed, titled, and dated center verso in graphite

group of 4 works initialed lower right in graphite on each work artist’s name, titled, and dated printed lower right in ink on each work

initialed and dated lower right in graphite signed, titled, and dated center verso in graphite