The Public Domain Review is an excellent website that specialises in long form pieces that are inspired by, and illustrated with, materials from long out of print and out of copyright books that are available online in the public domain - including materials from the Internet Archive. The site is reviewed (and praised) by the Guardian HERE.
They have just set up a publishing imprint to create physical books based on their essays and their first book is out - The Book of Selected Essays 2011-2013.