RAM 10 V.15

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

RAM 9

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

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