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Bureau of Standards, testing C.P. of [...] rights
Public domain

Bureau of Standards, testing C.P. of [...] rights

1909-01-01 · photo, print, drawing

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

Subjects
glass negatives
Credit lineBureau of Standards, testing C.P. of [...] rights. 1909-01-01. National Photo Company Collection, Library of Congress. Public domain.
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