The book is available at the Baldwin Project, Project Gutenberg, Internet Archive, Sacred Texts, and Hathi Trust. There is also a free audiobook at LibriVox. You can get a free Kindle ebook from Amazon too!
Far Away and Long Ago
The Building of the Wall
How Loki Put the Gods in Danger
How Loki Wrought Mischief in Asgard
How Brock the Dwarf Brought Judgement on Loki
How Freya Gained Her Necklace
How Frey Won Gerda, the Giant Maiden
Heimdall and Little Hnossa
All-Father's Forebodings
Odin Goes to the Mimir's Well
Odin Faces an Evil Man
Odin Wins for Men the Magic Mead
Odin Tells to Vidar the Secret of His Doings
Thor and Loki in the Giants' City
How Thor and Loki Befooled Thrym the Giant
Ægir's Feast: How Thor Triumphed
The Dwarf's Hoard, and the Curse That It Brought
Foreboding in Asgard
Loki the Betrayer
Loki Against the Æsir
The Valkyrie
The Children of Loki
Baldur's Doom
Loki's Punishment
Sigurd's Youth
The Sword Gram and the Dragon Fafnir
The Dragon's Blood
The Story of Sigmund and Signy
The Story of Sigmund and Sinfiotli
Story of the Vengeance of the Volsungs
Brynhild in the House of Flame
Sigurd at the House of the Nibelungs
How Brynhild Was Won for Gunnar
The Death of Sigurd
The Twilight of the Gods