The Delta Zeta Creed was written and presented to the National Council in 1939 by Dorothy Mumford Williams, Adelphi - Alpha Zeta, and accepted, becoming a life pattern for every Delta Zeta woman and a memorial to her. Dorothy Williams was a nationally acclaimed poet, an artist, and a teacher. Her sense of beauty and poetry was expressed in lyrics, sonnets, and poetic vehicles.

Her artistic gifts also found expression through her painting, gaining critical distinction in that media as well. As Delta Zeta's National Ritual Chairman, she was responsible for some of the ritualistic lyrics. She was named Delta Zeta Woman of the Year posthumously in 1982.