This is L. Frank Baum's book The Life and Adventures of Santa Claus. Its copyright has expired and the book is now in the public domain. I have formatted it to be printed in conjunction with my literature study that can be found on my page which can be found here: https://www.teacherspayteachers.com/Product/The-Life-and-Adventures-of-Santa-Claus-Literature-Study-3499204
The book is an 1170 Lexile level and has some complex sentence structures and vocabulary.
It is a magical tale about a baby, adopted by a fairy, that grows up to be Santa Claus. Its theme revolves around making one's mark on the world.