Ordnance survey map for official handbook of Saorstát Eireann. (Reduced from the four mile map. Reprinted).
Dublin :  Ordnance Survey, 
1931.
In: Saorstát Eireann. Irish Free State Official Handbook. The map is in a pocket at the back of the volume.
Principal Steamship Routes and Distances to and from Soarstát Ports.