Description: Report issued by the Bureau of Mines discussing the oil-shale formations of the Green River in the Piceance Creek Basin. Detailed descriptions of oil-shale samples taken from the Green River formation are presented. This report includes tables, maps, illustrations, and a photograph.

Description: Conversion card issued by the United States National Bureau of Standards containing conversion information for length, area, mass (weight), volume, and temperature (exact). The front lists "Approximate Conversions to Metric Measures" and includes a continuum of temperatures at the bottom and a centimeter ruler along the right side (to 8 cm.). The back of the card lists "Approximate Conversions from Metric Measures" and includes an inch ruler along the right side (to 3 in.).

Description: Pamphlet issued by the United States National Bureau of Standards containing a list of government pamphlets, reports, and other resources related to the metric system of measurement. It includes a form for ordering materials from the Government Printing Office as well as an illustrated description of everyday conversions for weight, volume, length, and temperature.

Description: Pamphlet issued by the United States National Bureau of Standards providing an overview of the English system of measurement used in the United States and of the metric system. The internal pages of the pamphlet contain a chart labeled "The Modernized Metric System" which includes tables of common conversions and a chart of the seven base units: meter/length, kilogram/mass, second/time, ampere/electric current, kelvin/temperature, mole/amount of substance, and candela/luminous intensity, as well as two supplementary units: radian/plane angle and steradian/solid angle. There is also a graphic representation of yards versus meters in ruler form at the bottom.

Description: Pamphlet issued by the United States National Bureau of Standards discussing the reasons that the U.S. decided passed the Metric Conversion Act of 1975 and provides tables, illustrations, and formulas for converting between customary units and metric units of measuring weight, length, volume, and temperature. It also includes a discussion of how one might expect to use metric measurements in the marketplace, in the home, and at work.