RAM 2 V.3

titled lower left below the image signed and dated lower right below the image hardware: IBM 1620 output machine: ComPlot DP-1

RAM 1 V.1

titled lower left below the image signed and dated lower right below the image hardware: IBM 1620 output machine: ComPlot DP-1

RAM 9 V.2

titled lower left below the image signed and dated lower right below the image hardware: IBM 1620 output machine: ComPlot DP-1

Polygonzug 16/3/65 Nr. 2 (Polygonal Chain)

signed, titled, and dated on the reverse in graphite artist’s name, computer identifier ER56, and plotter machine identifier Z64 printed lower right hardware: Standard Elektrik Lorenz Computer software: Fortran output machine: Zuse Z64 Graphomat

Letter of Authenticity

A letter of authenticity from the D.P. Henry Archive certifying the various signatures that the artist used throughout his career signed by the artist’s daughter for the D.P. Henry Archive