Construction worker high above the street, New York, c 1933.

Keep Mum, She's Not So Dumb

Careless Talk Costs Lives

Construction men working on a mooring mast, USA, c 1930s.

"Happy couple with a cheque, 1954."

"Two children playing while a man reads a newspaper, c 1949."

"Merthyr by-election, Wales, 31 May 1934."