For the table of contents, check at the bottom of this post below the image; the links below are to the Baldwin Project edition of the book.
The book is available at the Baldwin Project, Project Gutenberg, Internet Archive, Hathi Trust, and Google Books. You can get a free Kindle ebook from Amazon too!
Greyfell
Curse of Gold
Fafnir, the Dragon
In Ægir's Kingdom
Brunhild
In Nibelungen Land
Siegfried's Welcome Home
Journey to Burgundyland
Kriemhild's Dream
How the Springtime Came
War with the North-Kings
Story of Balder
How Gunther Outwitted Brunhild
In Nibelungen Land Again
How Brunhild Was Welcomed Home
How Siegfried Lived in Nibelungen Land
How the Mischief Began to Brew
How They Hunted in the Odenwald
How the Hoard Was Brought to Burgundy