Catholic Archdiocese of Sydney: http://www.sydney.catholic.org.au/

Royal Australian Historical Society: http://www.rahs.org.au/

Australian Historical Association http://www.theaha.org.au/

The Catholic Church in Australia: http://www.catholic.org.au/

National Office for Evangelisation
http://www.evangeliseaustralia.com

The Catholic Enquiry Centre
http://www.catholicenquiry.com