Complex sentence: In 1920 Ernest and Harold Harvey established the Harvey-Procter School and he and his wife, Dod, accepted a commission to decorate the Kokine Palace in 1919 and 1920.
Split into simpler sentences: In 1920 Ernest and Harold Harvey established the Harvey-Procter School. He and his wife, Dod, accepted a commission to decorate the Kokine Palace in 1919 and 1920.