Petra Cabot (February 21, 1907 – October 13, 2006) was an American designer and artist, perhaps best known for styling of the Skotch Kooler for the Hamilton Metal Products Company.
According to The New York Times, the Skotch Kooler could keep ice cream firm for three hours without ice and was handy for fishing trips, keeping "groceries cold on the way to the lake and fish cold on the way back."
The structure was composed of "three layers of insulation: one of fiberglass, one of inert air and a heat-reflecting outer surface."
[1] Cabot was born in Philadelphia, Pennsylvania, on February 21, 1907.
She trained as an artist and worked as a designer, mural painter and in the theatre.