The Jewish National University Library and the Hebrew University of Jerusalem have put together a collection of maps of Jerusalem dating back to the 13th century. The maps are available online and in high resolution, Mr. SID format. The collection is searchable by date and author.

An old, less portable map of Jerusalem is the Madaba Mosaic Map. The Madaba Map continues to serve as the floor of a Greek Orthodox church but was formerly part of a Byzantine church built in the 6th or 7th century. The original mosaic was about 15 m x 6 m but only about a quarter of that is still in existence. The map illustrates various parts of the what is now currently Israel, including Jerusalem. The site highlights various sections of the map and provides a host of links and background information.

If you are interested in the history of cartography, both of these sites are worth checking out. Read the Jerusalem Post story on these and other maps.