From the late 1920s until the end of the 1930s, Harris' exqusite pastels were among the most admired in the calendar-art business. Many of her great Art Deco pin-ups effectively expressed the magic and mystery inherent in the romantic themes that were so popular during the era. Undoubtedly the finest female illustrator, Harris had her pin-up nudes and glamour art reproduced and published on millions of calendars.