Abstract: A tray assembly is provided which allows an information-carrying substrate to be seen through a cover portion thereof. The assembly includes a transparent cover mounted to an opaque base. The substrate is inserted between the cover and base which are then secured to each other. Openings are provided within the base to allow the cover to be detached therefrom. The cover and base include corresponding peripheral channel and ridge portions, respectively, which facilitate the mounting of the cover to the base. The ridge portions of the base also center the substrate. Projections extending from the longitudinal edges of the cover extend through corresponding slots in the base to provide locking engagement of the two members.