Collection contains papers of Olga and Brian Penton. Some are handwritten drafts of unpublished, untitled material. Others are typescripts of unpublished material such as 'Outrageous fortune' by Brian Penton and 'We Prometheans' by Olga Penton. There are typescripts of articles by Brian Penton. Included in the collection is a carbon typescript of 'Why Singapore fell' by H. Gordon Bennett. This was published in the Sydney Daily Telegraph.