Public domain
Thermostat recording temperature in the pasteurizing unit at the Burlington cooperative milk bottling plant. Burlington, Vermont
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineThermostat recording temperature in the pasteurizing unit at the Burlington cooperative milk bottling plant. Burlington, Vermont. 1941-01-01. Delano, Jack. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.