[anatoly]

1. Apart from Project Gutenberg, where do your books come from?

2. When you proofread and fix typos, do you contribute the fixes back upstream?

[acabal]

The vast majority come from PG. When they don't it's another public domain transcription source, like Wikisource, Faded Page, or Project Gutenberg Australia. We usually don't create our own transcriptions.

Our producers can and do contribute back upstream! It's up to the individual producer.