CNN
Cnn: 1840 1860 Opium Wars: Trade War: Britain Acquires 'A Barren Rock'
A CNN article about 19th century trade between Britain and China that includes information about Canton and other useful things. Includes pictures if you click on the names in the article.
HyperHistory Online
The Opium War
A brief article describing the background of the Opium War of 1839 to 1842, and the British involvement in the opium trade.
Other
Mr. Dowling's Electronic Passport: The Opium Wars
Resource summarizes the viewpoints of both the British and the Chinese during the Opium Wars of 1839-1842.
University of Maryland
University of Maryland: The Emergence of Modern China
Provides information about the Opium Wars, Unequal Treaties, and other actions by Western powers that hastened the fall of Imperial China, and the emergence of modern China.
C3 Teachers
C3 Teachers: Inquiries: Imperialism
A learning module on foreign imperialism in China that includes several supporting questions accompanied by formative tasks and source materials, followed by a summative performance task. Topics covered include the role of the Opium Wars...
Harvard University
Harvard: Commissioner Lin's Letter to Queen Victoria
The content of the Letter Commissioner Lin wrote to Queen Victoria, along with brief analysis and historical information.