Exterior view of the Telephone Exchange Barracks, home to the Women's Telephone Unit of the Signal Corps, in La Belle Epine, Seine et Oise, Paris, Seine, France. The unit, known as the Hello Girls, played a vital role in facilitating communication during World War One. 48544

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Size: 8511px × 5809px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

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