Abstract: A shelving structure comprising shelving connected without tools or bolts by slipping upright, hollow support pieces through holes in the shelving. T-shaped brackets are inserted through generally horizontally aligned openings in the uprights and secured by lowering a downwardly extending projection of the bracket into the hollow uprights, preferably with a close-fitting relationship. In the preferred form, the upper portion of the brackets are received into grooves on the underside of the shelves. A variety of embodiments may be constructed utilizing the same support pieces, brackets, and shelving.