GH made spelling mistakes: a Pictorial Knowledge publication in 1993 and included the artwork in spatial probabilities 1993: Watercolours by Gail Hastings at the Anna Schwartz Gallery, Melbourne, in 1993. spelling mistakes: a Pictorial Knowledge publication is a standalone artwork. The artwork's medium includes watercolour and lead pencil on paper, measuring, overall, spelling mistakes: a Pictorial Knowledge publication is in a private collection: Brisbane, 1999.