Ancient Text Sources

 Electronic Text Corpus of Sumerian Literature (ETCSL) from Oxford University
All the major texts are here but their translations are problematic because they are not translated to the scholars standard.

French School at Athens
A depositary of reports from French archaeological excavations from around the Mediterranean. This includes the excavations at the Minoan city of Malia where many Linear A texts were discovered.

Internet Sacred Text Archive
All the classics from all the spiritual movements up to the early 20th century.  While the more ancient ones have problematic translations from the original, these texts reflect the spirit of the time in which they were written and are thus historical in their own right.

CELT, the Corpus of Electronic Texts, is Ireland's longest running Humanities Computing project. It brings the wealth of Irish literary and historical culture to you on the Internet, for the use and benefit of everyone worldwide. It has a searchable online textbase consisting of over 19 million words, in 1638 contemporary and historical documents from many areas, including literature, medicine, and the other arts.

Project Gutenberg
Great resource for books on which copyrights have expired. This includes a lot of translations of the classic Greek and Roman texts.

Perseus Digital Library
A Tufts University collection which has been under development since 1987,. It covers the history, literature and culture of the Greco-Roman world. 

 Internet Archive
Internet Archive is a non-profit library of millions of free books, movies, software, music, websites, and more. This includes the Wayback Machine which store old websites dating back to the mid 1990's.

A large photo collection of high quality archaeological texts at University of California.
Original Site (shutting down):