Mary's father was the historian, photographer and artist Peter Pitseolak and her mother was graphic artist Aggeok Pitseolak. Her sisters Oodlooriak Manning, and Quyuq Ottokie were both graphic artists in the early 1960s.

Mary's prints were included in the Annual Cape Dorset Print Collection in both 1961 and 1963. She has been exhibited in Canada and internationally in Europe and the United States. She has been collected by various institutions such as the Museum of Anthropology, Vancouver, the Canadian Museum of Civilization in Gatineau, the Fine Arts Museums of San Fransisco, the Winnipeg Art Gallery, and others. 

She now lives in Iqaluit. 

Exhibitions

• ART ESKIMO, Galerie de France
• Baffin Island Sculpture Exhibition, Baffin Regional School
• Canadian Eskimo Arts Festival, Alaska Methodist University Galleries
• Cape Dorset Graphics *61, (annual collection)
• Cape Dorset Graphics *63, (annual collection)
• Contemporary Canadian Eskimo Art, Gimpel Fils
• Eskimo Art, Embankment Gallery
• Eskimo Fantastic Art, Gallery 111, School of Art, University of Manitoba
• Images of the Inuit: from the Simon Fraser Collection, Simon Fraser Gallery, Simon Fraser University
• Inuit Graphics and Drawings from 1959-1990, Arctic Artistry
• Inuit Traditions in Graphics: 1961-1987, Arctic Artistry
• Media and Techniques, McMaster Art Gallery
• Strange Scenes: Early Cape Dorset Drawings, McMichael Canadian Collection

Collections

• Agnes Etherington Art Centre, Queen's University, Kingston
• Art Gallery of Greater Victoria, Victoria
• Canadian Museum of Civilization, Hull
• Laurentian University Museum and Arts Centre, Sudbury
• McMaster University Art Gallery, Hamilton
• McMichael Canadian Art Collection, Kleinburg
• Museum of Anthropology, University of British Columbia, Vancouver
• Winnipeg Art Gallery, Winnipeg