Glad to hear you're liking things! I started the project and am the managing editor of sorts. We're just a small group of volunteers. Our process is very painstaking and specialized so we get much fewer contributors than larger, more easy-going projects like Gutenberg; but I'm just glad that we can contribute a little to free culture everywhere :)
Curious, who is the founder of this project? Interested to hear more about it's background and the team behind getting this off the ground.