Abstract: A plurality of information carrier holders, each having flat, transparent pockets, are connected together selectively along mutually perpendicular axes so that they can be longitudinally connected or stacked into a predetermined pattern to display in correct positional relationship information carriers, e.g. elongated cards held in the pockets. Connecting means which may be the information carriers themselves between individual pocket-containing elements permit them to be replaced or added. In another embodiment the connection means is by interlocking ribs of adjacent elements.