The book uses source materials not employed previously; it examines topics not studied in the past; it takes approaches not attempted before; and it draws upon the latest research published, not only in Australia, but overseas as well. The book does not aspire to be a general account, like the one Patrick O'Farrell published over 30 years ago. Instead, this new history is concerned with certain key themes and topics, some dealt with previously, but many not—or at least not dealt with in Australia before. Issues around race, gender, colonialism, popular culture, immigration restriction, eugenics, crime, mental health, employment discrimination, politics, war and religion are all interrogated. While taking a traditional national approach in focusing on the Irish in one country, the book also has a trans-national dimension in that it situates the Australian Irish experience in the much broader context of the worldwide Irish diaspora. By adopting this approach, the book reveals much about what Irish Australians shared with Irish communities elsewhere, but, in addition, it throws light on the ways in which the Irish-Australian experience was unique. In doing so, this book makes a significant contribution to the history of Australia, of Ireland and of the Irish diaspora.