Big Show Offs: The clowning achievements of George Coppin and Barry Humphries was presented by Simon Plant at the Athenaeum Library, Collins Street, Melbourne, in July 2026 as part of Melbourne Rare Book Week.

Theatre Heritage Australia has published the talk here:
https://theatreheritage.org.au/on-stage-magazine/general-articles/1259-big-show-offs-the-clowning-achievements-of-george-coppin-and-barry-humphries?shem=aimgspe,