TOP: A screenshot of a scan of (what I believe to be) a photocopy of a photograph titled “Decorator Test” by Robert Cumming (1974). Printed in LAICA Journal #1, found via Experiments in Print.
BOTTOM: Robert Cumming’s “Of 8 Balls Dropped From The Peak Roof, 2 Fell To The North, 6 Fell To The East”, also 1974. Found via SFMoMA.