Abstract: A billboard apparatus includes a back for mounting to a support surface and including a pair of bottom tabs extending outwardly of the perimetric edge of the back. A pair of top tabs extend outwardly of the top edge of the back in a position and direction opposite the bottom tabs. A cover includes a planar body and a perimetric wall defining opposed pairs of bottom and top slots positioned to receive the bottom and top tabs, respectively, of the back. A pair of spring arms extend from the bottom edge of the back and engage the perimetric wall of the cover to urge the cover downwardly, thereby retaining the top tabs within the top slots. The bottom tabs extend sufficiently downward to be retained in the bottom slots when the cover is mounted on the back and resting with the perimetric wall lying against top edge of the back.