Sir, I've worked on/off with Project Gutenberg for over 12 years (since I was 18). I've mailed thousands of CDs/DVDs full of PG's library to people in thirdwave world countries, and I've also reviewed hundreds of books, on my own time and for no compensation, for their Distributed Proofreaders project (http://www.pgdp.net/c/).

No, I have not tried to digitize old journals. But I HAVE helped contribute to the digitization and distribution of public domain works. I'm aware of the time and financial resource commitments involved.