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Pontoon bridge built by US Army Engineering unit at Washington Barracks, Washington, D.C.
Public domain

Pontoon bridge built by US Army Engineering unit at Washington Barracks, Washington, D.C.

Harris & Ewing · 1917-01-01 · photo, print, drawing

From the collection of Library of Congress. Free to download, adapt and use — no permission needed.

Credit linePontoon bridge built by US Army Engineering unit at Washington Barracks, Washington, D.C.. 1917-01-01. Harris & Ewing. Harris & Ewing Collection, Library of Congress. Public domain.

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