The idea was born of a home renovation and evolved into a worldwide movement.

In 2009, Todd Bol was renovating his garage in Wisconsin when he ripped off its old wooden door. He liked the wood, though, and didn’t want to throw it out. So after staring at it for a while, he decided to use it to build a small monument to his mother, who had been a schoolteacher.

He fashioned it into a replica of a schoolhouse, two feet high and two feet wide, put his mother’s books in it, and planted it on his front yard, hoping to start a little book exchange for his neighbors.

“It was a spiritual gesture,” he said.
Todd Bol, Creator of Little Free Library Movement, Dies at 62 — by Katharine Q Seelye

https://www.nytimes.com/2018/10/23/o...-bol-dead.html