Books like A Book of Folk-lore
S. Baring-Gould
A Book of Folk-lore is 264 pages, about 4 hours 50 minutes at 250 words a minute.
9 books to read next
How long each takes
The Golden Bough 13.5 h 
Encyclopedia of Things That Never Were 4.4 h 
Doruntine 3.3 h 
Bigger Secrets 4.5 h 
A Million Years in a Day 6.6 h 
The Stations of the Sun 10.3 h 
The Invention of Tradition 5.9 h 
Funk & Wagnalls Standard Dictionary of Folklore, Mythology, and Legend 22.7 h 
Kokoro 6.2 h Bar height shows length. Estimated at 250 words a minute.