References

 Links are provided for those sources that can be read on line.

The Pyramid Text index
The Pyramid Text online
Sacred Texts
The Coffin Texts
Ending The Myth of Jesus-Horus
The Greatest Story Ever Garbled
Zeitgeist The Movie
Horus and Osirus

A lot of what Gerald Massey wrote can be read on line:
"Ancient Egypt,The Light of The World"
"Massey's Lectures"
"The Natural Genesis"
"The Book of The Beginnings"

 E.A.Wallis Budge can also be read on line:
Legends of The Gods
The Book of The Dead
Papyrus Ani
Egyptian Magic

Erik Hornung, "The Ancient Egyptian Books of the Afterlife" is not offered for reading on line that, I am aware of, but there are sites that review and describe the book, as well as his "The Secret Lore of Egypt."
    The Secret Lore of Egypt