In the Anatomy of Time Mural which Gerard created for the Pan Am Building in New York, which is now to the MetLife Building, he has combined three-dimensional painting with the collage technique to depict various historical events. This is a 300 square foot mural made from glass containing a hand-welded Aztec calendar, click faces, dials, pendulums, watch parts, including springs, pins and needles, mounted on oxidized gold panels. Superimposed on the panels are painted glass, Japanese parchment, and barks of Mexican trees.