Abstract: An apparatus is disclosed for facilitating the dialing of a given telephone number on a push button type telephone having a fixed arrangement of push buttons. The apparatus illustratively takes the form of a card having a plurality of openings therethrough of a number equal to the number of push buttons and positioned according to the fixed arrangement thereof such that the card may be readily inserted over the telephone and its push buttons inserted through the openings. Each of the openings has a region adjacent the opening and uniquely colored to identify that opening and the push button inserted therethrough from all other push buttons. A plurality of separable elements having a variety of colors corresponding to those of the regions is provided. The card includes an area for receiving and mounting selected of the plurality of elements on the card, the elements being selected and arranged in a sequence on the card to represent the given telephone number.