I made this drawing at a friend's house, because I will draw anything I see. The structures of stairs, walls, and shelves intrigued me as a form of three-dimensional domestic geometry. The books on the floor are sub-sets of this geometry. When you put books on the floor, (no, of course you don't have any books on your floor) the rectangular slabs form their own perspective, unless you are obsessive enough to line up your books with the parallel lines of the floorboards or tiles. If the books have designs on the covers, then these designs or images follow yet another subset of a subset in the geometric hierarchy. The same would be true of pictures hanging on the wall. See, it all makes sense now.
Brown Pitt technical pen ink on sketchbook page, 5" x 7", September 27, 2014.