The book is available at Project Gutenberg (I have not checked for other online sources). There's also a free audiobook at LibriVox.
Table of Contents
Ilya and Cloudfall
Ilya meets Svyatogor and parts with Him
Ilya and Nightingale the Robber
Ilya and Falcon the Hunter
The Adventure of the Burning White Stone
How Quiet Dunai had brought the Princess Apraxia to Kiev
The Story of Nikitich and Marina
How the Court of Vladimir received a Visitor from India the Glorious
The Story of Kasyan and the Dream Maiden
How Stavr the Noble was saved by a Woman’s Wiles
The Golden Horde
Whirlwind the Whistler, or the Kingdoms of Copper, Silver, and Gold
Vasily the Turbulent
Nikita the Footless and the Terrible Tsar
Peerless Beauty the Cake-Baker