A History of the Vikings, by Gwyn Jones
The Saga of Gisli, translated by Ralph B. Allen
Viking - Hammer of the North, by Magnus Magnusson
Myths of the Norsemen, From the Eddas and Sagas, by Guerber
Beowulf the Warrior, edited by Ian Serraillier
Sadly, most of the books are too old to have cover pictures, and my particular version of The Saga of Gisli is too old to exist in Amazon's databases! Humph. Still, both Gisli and Beowulf are incredibly good versions of the story, Beowulf being eclipsed (in my mind) only by the recent Olde English/Modern English split version, found here.
Anyone else have recommendations?