In 2019, Sundowner of the Skies: The Story of Oscar Garden, The Forgotten Aviator was published, written by one of his daughters, Mary Garden. It was shortlisted for the NSW Premier's History Award 2020 for a book of international significance. In 2020, Oscar's youngest daughter Annamaria Aurelia Garden self-published her own book "Oscar Garden: A Tale of One Man’s Love of Flying". One review of the two books noted that it was odd to have two biographies written about the same person from two different familial perspectives, but that they complement each other.
