The Online Books Page

Books about the Dane Havelok:

• The Lay of Havelok the Dane (EETS extra series #4; London: Pub. for the Early English Text Society by N. Trübner and Co., 1868), ed. by Frederic Madden and Walter W. Skeat (Gutenberg text)
• The Anglo-Norman Metrical Chronicle of Geoffrey Gaimar: Printed for the First Time Entire From the Manuscript in the British Museum, With Illustrative Notes, and an Appendix Containing The Lay of Havelok, The Legend of Ernulf, and The Life of Herward (in French, with English notes; London: Pub. for the Caxton Society, 1850), by Geffrei Gaimar, ed. by Thomas Wright (multiple formats at Google)
• Four Romances of England: King Horn, Havelok the Dane, Bevis of Hampton, Athelston, ed. by Ronald B. Herzman, Graham Drake, and Eve Salisbury (HTML at metseditions.org)