Ancient and early modern mathematics online

The Internet resources are getting better and better. What a luxury to be able to browse through Euler's Opera Omnia, Diophantus' Arithmetica, Einstein's Grundlage der allgemeinen Relativitätstheorie, Fermat's Oeuvres, or Euclid's Elements, among many many others. Here are some links:

• Wilbour Hall
• Cornell University Historical Math Monographs
• Internet Archive
• Open Library
• Rare Book Room
• Libraries Without Walls
• Clay Mathematics Institute
• Gallica
• Digital Library of India
• The University of Michigan Historical Mathematics Collections
• The Penn State Online Books Page
• The American Mathematical Society Books Online

There is still a lot of non-uniformity in how the documents are presented, searched or read. But I believe that, with time, we will have the whole lot there for everyone to read.