The NSW Land and Property Information division of the Department of Finance and Services has recently published its online Atlas of NSW overlaying all types of statistical information onto maps of NSW covering on the topics of economy, elections, environment, history, people and the 2006 census.
I’ve only looked in detail at the elections section, which is a fabulous treasure trove of historical information from 1856, including electorate maps and results. You can zoom in to any part of NSW and scroll through time. No doubt Antony Green enjoyed himself putting the information together!
Here is the electoral atlas.