Lithomancers consider theirs the first magick. When Adam named all the animals in the Garden of Eden, he was practicing proto-lithomancy. The Sphinx, The Pyramids, The Great Wall of China, all of these were drawn on paper before they were built. The lithomancers also take credit for the formation of the Guilds and the development of the trades. The fact that no lithomancer could actually build anything is something that is ironic in the least.
Lithomancers tend towards artistic callings.
Some become scientists and physicists. They tend to spend all available time in their studios. Any free money is spent on vellums, new pencils, etc. The walls of a lithomancer's apartment will be lined with old blue lines. There will be vellums and yellow trace all over things.