The Hunting of the Snark
- An Agony in Eight Fits by Lewis Carroll, with illustrations by Henry Holiday. Text and illustrations of this children's book.
- http://etext.library.adelaide.edu.au/c/carroll/lewis/snark/index.html

Henry Holiday (1839-1927)
- Notes on the Victorian painter and designer Henry Holiday from Bob Speel.
- http://myweb.tiscali.co.uk/speel/paint/holiday.htm

About Betty Fold
- Brief biography of Henry Holiday, including information about his involvement with the suffragette movement. From Betty Fold Guest House, once Holiday's home in the Lake District.
- http://www.bettyfold.co.uk/about.html

Holy Trinity Church, Casterton
- Victorian church in Cumbria with wall paintings and stained glass windows by Henry Holiday. Detailed descriptions of the pictures.
- http://www.visitcumbria.com/sl/chk7.htm

National Museums Liverpool - Dante and Beatrice
- Presents the oil on canvas painting and provides a brief description.
- http://www.liverpoolmuseums.org.uk/walker/collections/19c/holiday.asp

University of Virginia Library: The Hunting of the Snark
- An Agony in Eight Fits by Lewis Carroll, with illustrations by Henry Holiday. Text and illustrations.
- http://etext.lib.virginia.edu/cgibin/browse-mixed?id=CarSnar&tag=public&images=images/modeng&data=/lv1/Archive/eng-parsed