Drawing, Pen and Ink on Paper

Pen and ink sketch of 3 technicians at mission control (Mariner Mars). Three figures are in the foreground at a console on the right. The figure closest to the viewer is seated, wearing glasses, and his right arm is extended. The other two figures are both standing, looking down toward the console on the right. The furthest one back is wearing glasses. A fourth vague figure is in the extreme background facing another set of consoles. The upper right corner has ink scribbles and blots.