Downloaded from: http://man7.org/tlpi/code/index.html
Version:
$ sha256sum tlpi-181022-dist.tar.gz
c202353b1683f1db72333a59e3da9de67198bc31bb4caebf57d32275840db9ed tlpi-181022-dist.tar.gz
Original README: README.
GitHub mirror with most stars I've seen so far: https://github.com/bradfa/tlpi-dist