University of Michigan: Sonnets and Lyrics by Helen Jackson  
   Complete version of the 1886 compilation, consisting of scanned images of all pages.
   http://moa.umdl.umich.edu/cgi/sgml/moa-idx?notisid=BAD8912

Selected Poetry of Helen Hunt Jackson (1830-1885)  
   Text of Doubt, God's Light-houses, Habeus Corpus, and September; from the Representative Poetry On-line project at the University of Toronto.
   http://www.library.utoronto.ca/utel/rp/authors/jacksonh.html

Helen Hunt Jackson  
   Links to biographies and chronologies, bibliographies, and text of written works, provided by Donna Campbell, Professor at Gonzaga University.
   http://www.gonzaga.edu/faculty/campbell/enl311/jackson.html

Library of Congress: Glimpses of California and the Missions  
   Full text of the book by Helen Hunt Jackson with illustrations by Henry Sandham. SGML version also available.
   http://lcweb2.loc.gov/cgi-bin/query/r?ammem/calbk:@field(DOCID+@lit(C186T00)):@@@$REF$

Colorado College Tutt Library: Helen Hunt Jackson Manuscript Collection  
   Research guide to the Jackson Papers, as well as biography and chronology and dates of her major publications.
   http://www2.coloradocollege.edu/library/SpecialCollections/Manuscript/HHJ.html