Abstract: A unitary holder device holds two protective CD boxes. The holder device comprises a pair of side rails positioned along opposite sides of the holder device such that a first CD box can be received and held between the side rails. A pair of lips or tabs project upwardly from opposite ends of the holder device such that a second CD box is received and held between the pair of lips or tabs. The second CD box is held in superimposed position next to the first CD box. Two or more holder devices can be combined to store a plurality of CD boxes, with the CD boxes being positioned in a stack one upon the other. The hinges of the CD boxes are all located on one side of the stack, and the hinges on each CD box is in alignment with pivotable engagement members that hold the adjacent holder devices together. Adjacent holder devices in the stack can be pivoted to open a CD box that is held between the adjacent holder devices.