Born in Russia in 1904 (or 1908), Louis Hirshman worked actively in Philadelphia as a caricaturist. His rendering of the ballerina Catherine Littlefield in 1938 so outraged the dancer that she reportedly marched into the Artists' Union, tore the drawing in half and slapped Hirshman. Hirshman also designed at least two posters for the WPA War Services Project. His "Portrait of Einstein" was gifted to the Museum in 1977. In addition to wood and glass, Hirshman used a brush, mop head, abacus and pad of paper to render the great physicist. Hirshman died in 1986.