The instruction sheet was contained in parts envelope No. 334-67 that is illustrated above and to the right.
According to the instruction sheet the dispatch board was always lighted by L53 or L63 bulbs. However, the Lionel Service Manual calls for an L57 lamp. All of these are bayonet mounted clear bulbs, but the L57 draws 0.1 amps, and the others draw 0.2 amps, so they give a brighter illumination and release more heat.
We would recommend the use of the new LED clear lamps that generate no heat be used on this accessory. The lamps can be changed by unscrewing the two top ornamental horns on top and lifting off the cover.
The dispatch board has a TAN plastic base that has three electrical binding posts, and the clock on top is illuminated by the interior lights. The board itself has a special coating that would allow arrivals and departures to be chalked in the green areas that are located on both sides of the center displayed data.
Dimensions: 9-7/8 inches long, 4-1/8 inches wide, and 7-1/2 inches high.