Today's free book is Journal of American Folklore, Vol. 1, No. 1 (1888). For the table of contents, check at the bottom of this post below the image; I have provided individual story titles where applicable.
The book is available at Hathi (I have not checked for other online sources).
Table of Contents
On the Field and Work of a Journal of American Folk-Lore (pp. 3-7)
T. F. Crane. The Diffusion of Popular Tales (pp. 8-15)
William W. Newell. Myths of Voodoo Worship and Child Sacrifice in Hayti (pp. 16-30)
H. Carrington Bolton. The Counting-out Rhymes of Children. A Study in Folk-Lore (pp. 31-37)
D. G. Brinton. Lenâpé Conversations (pp. 37-43)
W. M. Beauchamp. Onondaga Tales (pp. 44-48)
... The Serpent and the Thunderers
... The Terrible Skeleton
Franz Boas. On Certain Songs and Dances of the Kwakiutl of British Columbia (pp. 49-64)
J. Owen Dorsey. Songs of the Hec̷ucka Society (pp. 65-68)
George Bushotter and J. Owen Dorsey. A Teton Dakota Ghost Story (pp. 68-72)
J. Owen Dorsey. Ponka Stories, Told by Tim Potter, or Big Grizzly Bear, in 1872, at Ponka Agency, Dakota Territory (p. 73)
... Prophecies
... Sleight of Hand
J. Owen Dorsey. Abstracts of Omaha and Ponka Myths (pp. 74-78)
... He who sticks a plume in his hair
... The Chief's Son and the Thunders
... The Chief's Son, The Snake-Woman, and the Thunders
... Two Faces and the Twin Brothers
... The Brothers, Sisters, and Red Bird
Waste-Basket of Words (pp. 78-79)
[The Credit of Originating the Term "Folk-Lore"] (pp. 79-81)
Request for Information in Regard to Terms Used in Talking to Domestic Animals (pp. 81-82)
Superstitions Connected with the Human Hand (p. 83)
Conjuring in Arkansas (p. 83)
Negro Dances in Arkansas (p. 83)
The Festival of the Sacrifice of the White Dog as Now Practised at the Onondaga Reservation (pp. 83-85)
Why the Porcupine and Toad Have No Noses (p. 85)
Heroic Deeds of Glooscap (p. 85)
Article on Folk-Lore (p. 86)
Book Reviews
The English and Scottish Popular Ballads by Francis James Child (p. 86)
Annuaire des Traditions Populaires (p. 87)
Popular Tales and Fictions: Their Migrations and Transformations by W. A. Clouston (pp. 87-88)
Perrault's Popular Tales by Andrew Lang; The Most Pleasant and Delectable Tale of the Marriage of Cupid and Psyche by William Adlington, Andrew Lang (pp. 88-89)
Select Tales from the Gesta Romanorum by C. Swan (p. 89)