The book is available at Internet Archive, Hathi Trust, and Google Books.
The Serpent King
The Might of the Cow-Headed Club
The Three Brothers
The Story of White-Headed Zal
Rustem the Hero
The Seven Labours of Rustem
The Seven Labours of Rustem (concluded)
The Further Adventures of Kai Kaoos
Sohrab the Child of Many Smiles
Sohrab and Rustem
The Death of Sohrab
The Story of Unlucky Saiawush
The Coming of Kai Khosroo
Rustem the Deliverer
Rustem Fights with Demons and Rescues
Byzun
Barzu the Boastful
The End of Peran-Wisa and Afrasiab his
King
How Kai Khosroo Found His Rest
How Gushtasp Won His Way
The Story of Prince Isfendiyar
The Death of Rustem