Today's free book is The Storybook of the Shah; or, Legends of Old Persia by Ella C. Sykes with illustrations by Claude Cooper and Decorations by Ethel R. Sykes. For the table of contents, check at the bottom of this post below the image.
The book is available at Internet Archive, Hathi Trust, and Google Books.
The Story of King Jemshed
The Story or King Zohak and King Feridun
The Stories of Zal and the Childhood of Rustem
Rustem, the Champion of the World
Rustem and Sohrab
The Story of Byzun and Manijeh
Some of the Feats of Rustem
The Story of Isfendiyar