Here you will find one of the greatest historical atlases: Charles O. Paullin and John K. Wright’s Atlas of the Historical Geography of the United States, first published in 1932. This digital edition reproduces all of the atlas’s nearly 700 maps. Many of these beautiful maps are enhanced here in ways impossible in print, animated to show
change over time or made clickable to view the underlying data—remarkable maps produced eight decades ago with the functionality of the twenty-first century.

The link is an organized and commented collection of geographical, political and historical maps of the United Kingdom as well as other countries.

Provides some excellent links to Australia genealogical research via such record collections as assisted and convict immigration, census collections, directories, GEN-Webs, land records, place name gazetteers, marriage witness indexes, online B/M/D indexes, newspaper collections, orphans, passenger lists, published obituaries & funeral notices, slavery, wills & probate, etc.