Public domain
Copy machine in office
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Subjects
Credit lineCopy machine in office. 1936-01-01. Harris & Ewing. Harris & Ewing Collection, Library of Congress. Public domain.
Similar works
![Traffic paint undergoes rigid tests. Washington, D.C., April 16. At the U.S. Bureau of Standards, J.E. Keefauver of the Bureau has been running tests on the paint that is placed on safety zones and streets to determine which has the best wearing activity. The discs [?] are painted with the traffic p](https://thumbs.arkivism.com/loc-2016871525.jpg)
Traffic paint undergoes rigid tests. Washington, D.C., April 16. At the U.S. Bureau of Standards, J.E. Keefauver of the Bureau has been running tests on the paint that is placed on safety zones and streets to determine which has the best wearing activity. The discs [?] are painted with the traffic p
![Uncle Sam istrying to find a way for automobile tires to wear longer for 25,000,000 motorists. Wearing specimens of rubber to [...] that then 25,000,000 owners of automobiles may have tires that last longer is a [...] now in progress at the Bureau of Standards. W.L. Holt of the Rubber Section is sho](https://thumbs.arkivism.com/loc-2016889631.jpg)
Uncle Sam istrying to find a way for automobile tires to wear longer for 25,000,000 motorists. Wearing specimens of rubber to [...] that then 25,000,000 owners of automobiles may have tires that last longer is a [...] now in progress at the Bureau of Standards. W.L. Holt of the Rubber Section is sho
NO CAPTION
Jim Tillma in the electrical engineering laboratory. University of Nebraska, Lincoln
Conversion. Soft drink dispenser plant. The president of an Eastern manufacturing company now producing war essentials on prime and subcontracts, checks a contour gauge manufactured for Army arsenals. Gauges for measuring cartridges and other war materials must be accurate to the 2/10,000 of an inch
Washington, D.C., inventor C. Francis Jenkins