Here is a list of some of my favorite books about reincarnation and past lives.
Many Lives, Many Masters: The True Story of a Prominent Psychiatrist, His Young Patient, and the Past Life Therapy That Changed
Both Their Lives by Dr. Brian L. Weiss.
Children's Past Lives: How Past Life Memories Affect Your Child by Carol Bowman
Life Before Life:
Children's Memories of Previous Lives by Jim B. Tucker
Memories of Heaven: Children's Astounding Recollections of the Time Before They Came to Earth by Dr. Wayne W.
Dyer and Dee Garnes.