Abstract: A folding article of furniture, such as a bookcase or other storage unit, has in its conventional aspects a vertically extending back piece, at least one vertically extending side piece secured to the back piece, and a vertically spaced plurality of shelves secured to the back piece. Each side piece is pivotable over a 90.degree. angle relative to the back piece between a parallel or collapsed orientation and a perpendicular or use orientation, and each shelf is pivotable over a 90.degree. angle relative to the back piece between a parallel or collapsed vertical orientation and a perpendicular or use horizontal orientation. In its novel aspects, the side piece and the back piece are secured together without a hinge.