Polly Ngala was born in 1940 into the Anmatyarr tribe. She was married to Ray Yeramba (deceased) and now lives at Camel Camp on Utopia with her family and sisters, Kathleen Ngala, Maisy Ngala and Angeline Pwerle Ngala.
Polly began her artistic career in batik, like many of the women in Utopia, before venturing into painting with acrylic paints on canvas. She often assisted her sister Kathleen and also the late Emily Kngwarreye Kame with whom she shared the same country. Arlparra is her country from her father's side and her mother came from Ngwelay, commonly known as Kurrajong Bore. Together with her sisters, Polly is a senior custodian of the Bush Plum (Arnwekety) Dreaming.
Polly's depicts the Bush Plum and its effects on her country. She often depicts the topography in shades of reds, oranges and yellows reflecting the varying seasonal palette. Like her sister Kathleen she builds up layer upon layer of colour creating a multi-dimensional effect to reveal the Bush Plum (Ankwekety) - and her country - Alparra in all its glory.
- Brody, A., 1989, Utopia Women's Paintings: the First Works on Canvas, A Summer Project, 1988-89, exhib. cat., Heytesbury Holdings, Perth.
- Brody, A., 1990, Utopia: a Picture Story, 88 Silk Batiks from the Robert Holmes a Court Collection, Heytesbury Holdings Ltd, Perth.
- Aboriginal Artists Dictionary of Biographies - Central Desert, Western Desert & Kimberley Region, written by Janusz B.Kreczmanski & Margo Birnberg
- The Holmes a Court Collection, Perth;
- 1988 Aboriginal "Dot" Painting, Melbourne;
- 1992 Modern Art - Ancient Icon, The World Bank, Washington, USA
- 2003 - 20th Telstra National Aboriginal and Torres Strait Islander Art Award, Museum and Art Gallery of the Northern Territory, Darwin.
- 2000 - Arts d'Australie, Arts d'Australie, Stephane Jacob / Espace Mezzo - Avenue des Champs-Elysees, Paris.; 2000 Arts d'Australie, Arts d'Australie, Stephane Jacob / Air France, Paris.
- 1990 - 'Utopia - A Picture Story,' an exhibition of 88 works on silk from the Holmes a Court Collection by Utopia artists which toured Eire and Scotland.
- 1989 - Utopia Women's Paintings, the First Works on Canvas, A Summer Project, 1988-89, S. H. Ervin Gallery, Sydney.