Included in the collection are letters to his wife, to his sisters Aella and Edith (Mrs Hall), and to his brother Alan between the years 1885-1950, Mrs Giblin's diaries relating to life in Canberra during 1941-1943; manuscripts and typescripts, papers on the basic wage, standard hours, land values and other economic subjects; his 'Letters to John Smith' and 'More letters to John Smith'; the 'Response to Poetry' and a pocket diary with some notes written by Giblin during the last month of his life.