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The Modernized Metric System: the International System of Units (SI) and its Relationship to U.S. Customary Units

Chart of the six base units of the modernized metric system, including length, time, mass, temperature, electric current, and luminous intensity.
Date: 1968
Creator: United States. National Bureau of Standards.
System: The UNT Digital Library

[Moving Out - With the 101st Airborne]

Informational poster about the operations of the U.S. Army's 101st Airborne Division in Vietnam with photographs illustrating their activities.
Date: March 11, 1968
Creator: United States. Army Command Information Unit.
System: The UNT Digital Library