The William Cowper Page
- San Antonio College LitWeb site.
- http://www.accd.edu/sac/english/bailey/cowper.htm

William Cowper
- Brief biography and links at the Academy of American Poets.
- http://www.poets.org/poet.php/prmPID/608

William Cowper Collection
- Listing of holdings in the Cowper Collection at Princeton University Library. Includes published works and some personal papers and documents.
- http://libweb.princeton.edu/libraries/firestone/rbsc/aids/wcowper.html

Bartlett's Familiar Quotations: William Cowper
- (at Bartleby Library)
- http://www.bartleby.com/99/278.html

William Cowper Cryptograms
- Each puzzle is a quotation from Cowper's poetry, using a simple letter substitution code.
- http://www.mirror.org/crypt/cowper/index.html