Metropolitan Museum of Art
Metropolitan Museum of Art: American Portrait Miniatures of Eighteenth Century
The Metropolitan Museum of Art provides this informative page on American portrait miniature paintings of the eighteenth century.
Victorian Web
The Victorian Web: The Sublime
This site provides an excellent variety of essays divides the topic of the sublime into four categories: objective sublime, subjective sublime, characteristic literary motifs, and cultural relations.
Other
Stephen Luscombe: British Empire: Eighteenth Century Timeline
A timeline of events that occurred during the eighteenth century. The focus is primarily on the British Empire and Britain, but columns that list world, science, and artistic milestones during the same period are included.