Lots of usefull and rare scans of books and magazines to download - not just texts but fully scanned books with pictures and everything!
Some collections are big for example PRIVAT magazines - http://www.librus.ru/index.php?items...710&yaz=0&ru=2
or Science of everyday encyclopedia in 4 volumes or Magazine Scientific American - http://www.librus.ru/index.php?items...784&yaz=0&ru=2

well just plenty of stuff - http://www.librus.ru/index.php?items...b=0&yaz=0&ru=2


you have to register though - it's free and fast and doesn't ask a lot of details at all just email and nickname!