The desk

As quietly and quickly as possible, you make your way into the room, headed straight for the desk in the center, with every intention of searching it. However, the search yields little of note- all of the drawers are closed tight, locked by small silver keyholes. Some papers clutter the top of the desk, but most seem to be encrypted with some sort of code, and what is readable makes little sense. The most prominent page has a diagram filling most of the page, which appears to be an image of a man in a similar fashion to that of the Vitruvian Man, with a specific exception- the man in this image sports a prominent horsecock, lengthy enough to reach to his knee in the drawing. The pages are littered with dirt and dust, betraying the fact that they had not been disturbed in some time.