Engineers Observing Valves and Turning Pressure Dials, 1922. From "Time to Remember - Sitting Still And Going Slowly", 1922 (Reel 4); a review of events in 1922 including Irish Troubles, war between Greece and Turkey and developments in aviation and radio.

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Size: 4959px × 3967px
Photo credit: © Heritage Images / Alamy / Afripics
License: Licensed
Model Released: No

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