The University of Southern Denmark maintains a very rich site with information about Andersen's life, his bibliography, research on his works, links to other sites, etc.
The Hans Christian Andersen Gilead Memorial site has a plentiful supply of links to e-texts of Andersen's stories as well as information about the sequence and dates of publication.
HCA's Wikepedia entry.
The Odense City Museum in Denmark has an intriguing collection of information about Hans Christian Andersen, his childhood home (now a museum), hot spots of his life in Odense, digitized collections of his work, etc. Well worth a visit as it is somewhat out of the run-of-the-mill websites.
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