They had commercial artists there teaching commercial work, I didn't bother with that. (en.wikipedia.org)
Wayne Thiebaud (b. 1920) and Robert Mallary (1917 - 1997) met while working as commercial artists for Rexall Drug Company, in the 1940s. (allanstoneprojects.com)
Although one of many commercial artists in the movement, Rosenquist's references to mass - produced goods and mass media icons, together with his dispassionate, anonymous technique, and exceptional painterly skills, made him one of the key figures in the development of Pop art in the USA. (visual-arts-cork.com)