Defining Moments: Australian Exhibition Histories 1968-1999 is the focus of ACCA's 2019-2020 lecture series, with lectures shedding light onto markers of change in Australian art, addressing key contemporary art exhibitions and projects staged over the last three decades of the 20th century.

Lectures include:

• 15 April: Christo and Jeanne-Claude, Wrapped Coast 1968-69 by John Kaldor, Rebecca Coates
• 29 April: Digging for Honey Ants: the Papunya mural project by John Kean, Hannah Presley
• 3 June: Object and Idea by Ian Milliss
• 8 July: Inhibodress: multimedia interference by Peter Kennedy, Sue Cramer
• 5 August: Clifton Hill Community Music Centre by David Chesworth, Kelly Fliedner
• 2 September: Almost Anything Goes: Sculpturescape 1975 at Mildura by Julie Ewington
• 7 October: Creating a space for the feminist collective by Janine Burke, Helen Hughes
• 4 November: Post Object Art in Australia and New Zealand by Anne Marsh