I have two things - correction 3 - to say:
1. That amazes me; I have been told I started reading at age three, and I thought that my skill was impressive.
2. Emjoipedia (Yeah, I didn't know it exists until just now, either) says there are over 25 different versions of the "stack of books" emoji.
3. I have a complete thread on built-in symbols in Unicode available here. I will add the pile of books emoji.