Signal boxes call air raid wardens

Title (Dublin Core): Signal boxes call air raid wardens
Subject (Dublin Core): en Technology; en Anti-aircraft
Article Title and/or Image Caption (Dublin Core): Signal boxes call air raid wardens
extracted text (Extract Text): SIGNALS sounded by apparatus
installed in their homes and op-
erated from a central switchboard
at air-raid headquarters, will sum-
mon English volunteer air-raid
wardens to duty in case of enemy
air attacks, according to a plan
now being tested. At present,
wardens are called by telephone.
Language (Dublin Core): eng
Temporal Coverage (Dublin Core): World War II
Date Issued (Dublin Core): 1940-07
Is Part Of (Dublin Core): Popular Science Monthly, v. 137, n. 1, 1940
pages (Bibliographic Ontology): 88
Rights (Dublin Core): Public domain
Source (Dublin Core): Google Books
References (Dublin Core): Air Raid Wardens
Archived by (Dublin Core): Sami Akbiyik; Marco Bortolami (editor)