 Her first solo exhibition was at Gallery 101, Johannesburg, in 1964 after winning second prize in the U.A.T competition in 1963.Mason has exhibited regularly in Johannesburg, Cape Town, Pretoria, Stellenbosch, Mpumalanga and George.Goodman Gallery, Chelsea Gallery, Association of Arts Pretoria, Association of Arts Cape Town, Hout Street Gallery, Strydom Gallery, Dorp Street Gallery, Art on Paper, Abalone Gallery, Sasol Art Museum, University of Stellenbosch, Standard Bank Museum, Karen Mackerron Gallery, as well as lithographs, oil paintings and drawings at Ombondi Gallery in New York in 1990 and more recently, tapestries, paintings and drawings at the Deering Estate, Miami Dade, 2016 and lithographs at Art Basel Miami Beach 2010 and 2015.