a few from home
this is my own personal library. i used physics and inexpensive materials in designing the shelving to avoid wrecking my rented apartment's walls, and to keep from cutting too much into book-buying money. the shelves are made of 3/4" mdf. there are no screws or attachments anywhere. the shelves are placed in two shallow recesses in the walls. this placement prevents the shelves from moving side-to-side. the weight of the horizontal shelves holds the vertical supports in place quite nicely. the edges are hand painted. it's very sturdy and easily installed.
the wall recesses are 5" deep on both fireplace sides, 3' deep on one wall side, 5" deep on the other. so it doesn't need much side support to keep the whole thing up.
the shelves fill the walls on either side of the fireplace
the largest books rest on the floor
*see update here