The Australian Dictionary of Biography contains biographical information on over 13,000 people. It is a useful source of historical information on notable Australians.
The National Construction Code provides technical design and construction provisions for Australian buildings. The site contains all three volumes of the Code. Free registration is required.
The National Library of Scotland Maps site contains many high-resolution, colour, zoomable maps. The maps are mainly of Scotland and date from 1560 to 1970.