Army Threatens Blackout Unless Dimout Perfected

Describing dimout conditions in Cambridge as 99 percent complete, Major Ralph W. Robart, chief local air raid warden, said yesterday that "if this dimout effort is ineffective, the Army will be forced to order a full blackout for the duration."

Thousands of street lamps have been painted so that no light shines directly upwards, and all display and advertising signs have been ordered permanently extinguished.