Public domain
New perforating machine used by the Bureau of Engraving and Printing for perforating postage stamps ...
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Subjects
Credit lineNew perforating machine used by the Bureau of Engraving and Printing for perforating postage stamps .... 1909-01-01. National Photo Company. National Photo Company Collection, Library of Congress. Public domain.