Project Gutenberg and Archive.org are the two main online repositories of downloadable texts.

BBC: Free e-books provide unlimited holiday reading

During the lifetime of Project Gutenberg alone, the average time a book stayed in copyright in America rose from 30 to almost 100 years.

ECONOMIST: Michael Hart

Now, this isn't just a consumer tablet -- Spark's aimed at "those who love writing great software... using the typical Linux tools" -- but it will offer access to ebooks from Project Gutenberg, plus Qt and QML apps, too.

ENGADGET: Meet Spark, the 200 euro slate packing Linux-based Plasma Active UX

He called his enterprise Project Gutenberg.

ECONOMIST: Michael Hart