SACRED TEXT ARCHIVE
I never cease to be amazed at the great resources you can find on the Internet. My latest discovery: the Internet Sacred Text Archive, which includes full-text versions of all sorts of religious and mythological texts. Doing research on glamour, I came across its online version of the Malleus Maleficarum, the very creepy 1486 manual for witch hunters. (A "glamour" used to mean a literal magic spell.)