CC0 · no rights reserved
Baldwin Arithmometer
From the collection of National Museum of American History. Free to download, adapt and use — no permission needed.
About this work
This is the United States Patent Office model for a machine for adding a column of digits patented by Frank S. Baldwin, who is listed on the patent as a resident of Philadelphia. It is the second of several patents Baldwin filed relating to adding and calculating machines.
National Museum of American History’s own descriptionCredit lineBaldwin Arithmometer. 1874. Baldwin, Frank S.. National Museum of American History. CC0.
