Greetings fellow wizards!
I was just alerted to a new batch of old Solomonic manuscripts available online, from the Leipzig University. There are 142 of them in all! The Studies on Magic blog even gives us a list of the books and links directly to them, along with what kinds of images you will find in them (pentacles, seals, magick rings, etc, etc):
And in case that disappears, here is a link directly to the collection on the university’s website.
These are scans of untranslated texts, and you cannot download or print them. :( But that doesn’t stop them from being well worth looking through.