This links to WebMagick's Pre-Raphaelite page.  Click on "Artists," and then you can look at all sorts of nice Pre-Raphaelite paintings.  Click here for The Pre-Raphaelite Critic, a guide to contemporary criticism of the Pre-Raphaelites from 1849-1900.  It also has nice links to all sorts of pictures.

Two of my favorite artists are William Hogarth (1697-1764) and Caspar David Friedrich (1774-1840).  Here are some excellent links with biographical information, critical commentary and, of course, plenty of images:
               William Hogarth's Realm
              Haley & Steele presents William Hogarth--his work illustrated and appraised
              Selected Hogarth prints, scanned by Jack Lynch, Rutgers University
               William Hogarth and 18th-century Print Culture
               Caspar David Friedrich Gallery
               Caspar David Friedrich (from Mark Harden's Archive)
               Caspar David Friedrich
               Caspar David Friedrich (from WebMuseum, Paris)
               The Paintings of Caspar David Friedrich
 

This connects to the OSSHE Historical & Cultural Atlas Resource, which includes all sorts of really neat maps.

Click here for the first edition of the six-inch Ordnance Survey maps of England, Scotland and Wales.  The maps are dated between 1846 and 1899, and are of 1:10,560 scale.

The Versailles Treaty website includes a section with various early twentieth-century maps.

Historical Maps Online, presented by the Thomas R. Smith Map Collection, University of Kansas.

Map and mapping sites, from UMass Amherst Libraries.

The Perry-Castañeda Library Map Collection (University of Texas at Austin).  This site offers a lot of nice maps, ranging from street maps of Victorian London to environmental surveys of the Barents Sea.
 

For up-to-date road-maps of the United States and Canada, visit Yahoo! Maps.