NY AM Radio Stations 1939

[vts1134]

Does any one out there in VK land have a list of what radio stations were broadcasting in NY in 1939? I have 7 preset buttons for an AM radio sold in NY during the 1939-1941 era and I need to know what pushbutton labels would be appropriate for them.
Can any one tell me how pushbuttons were labeled when new? Did they come from the factory labeled? Did the dealer install them for you?