Grimoires are basically books on how to summon spirits. This may or may not be to your liking.
Some of the best known ones are:
Key of Solomon
Lesser Key of Solomon (Legemeton)
Grimorium Verum
Arbatel
Black Pullet
These form a good chunk of the basis for what we call the Solomonic tradition. Did King Solomon write these? Probably not as they reached what would become their standard form somewhere in the 16th century.
A good intro to the subject, provided you can get past the 'this is all black magic--errm wait, this is silly' viewpoint is Waite's book
The Book of Ceremonial Magic.
If you're more into Psalms and stuff, check out things like the Sixth and Seventh Books of Moses. I've never tried anything from that--yet--but it's often used in the US Hoodoo tradition. Also check out things like
Pow Wow: Long Lost Friend if you're more into traditional magic. The Pow Wow was brought to us by the Pennsylvania Dutch, and while a lot of the spells in there are quaint if not outright amusing by today's standards, it's still used quite a bit. The link is to the edition I have which is pretty bare-bones, but it is useful.
Good luck!