As a side project I produce ebooks for Standard Ebooks. By taking existing transcriptions from Gutenberg etc. that are in the public domain, the project aims to produce quality editions by adding thoughtful typography and high-quality markup. The addition of current semantics and web standards in construction also allow them to be more accessible. After the redesign of the book, they are proofread again and issued on the Standard Ebook website in multiple formats. The whole system is setup to allow maintenance after publication with fixes and updates by both the original producer and readers at large.
After doing the first couple of books, I settled into working mostly on plays as it's a form I have always enjoyed and the technical challenges make them much more interesting to work on.