Andrew Loomis

[2] After military service in World War I, Loomis worked for a couple of advertising agencies before opening his own studio in downtown Chicago in 1922.

[3] From that time until the late 1930s Loomis produced advertising paintings for many large companies such as Coca-Cola, Studebaker, Palmolive, Quaker Oats, Munsingwear,[3] and Kellogg's.

Herdlinger was one of three women chemists working regularly with Forrest Mars Sr. on the development of the new candy bar.

[8] Many of the books exhibit his own personally crafted techniques – such as the "ball and plane" method of head drawing – guided by Loomis's humorous dialogue.

Loomis died in 1959, but his final book, The Eye of the Painter and the Elements of Beauty (1961), was printed posthumously.

1938 painting by Andrew Loomis, representing the Dionne quintuplets .
1930s painting by Andrew Loomis, representing Frances Herdlinger at the Mars Factory