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Look and Learn History Picture Library License images from £2.99

Pictures of ‘signals’ (exact matches)

Signalling by fire, Ancient Greece
Signalling by fire, Ancient Greece
Signalling by heliograph
Signalling by heliograph
Chappe's optical telegraph
Chappe's optical telegraph
Baudot's printing telegraph
Baudot's printing telegraph
Submarine telegraphy
Submarine telegraphy
Military optical signals
Military optical signals
Telephone exchange
Telephone exchange
Ancient Greeks signalling by fire
Ancient Greeks signalling by fire