From introduction: This report is based on investigations carried on by the Geological Survey (U. S. Department of the Interior) under the auspices of the Interdepartmental Committee on Scientific and Cultural Cooperation (U. S. Department of State) and the Foreign Economic Administration. The function of the last two agencies is presently carried on by the International Cooperation Administration. Roberts is responsible for the text of this report and for the compilation of the geologic map. He was in Central America from January to April 1942 under a program of scientific and technical cooperation with the American Republics sponsored by the Department of State, and mapped manganese deposits in Costa Rica and manganese and antimony deposits in Honduras.

Revision of earlier report in this series detailing changes in classification resulting from study of up to 3,000 specimens.

From introduction: "Revision of skunk genus Spilogale based upon a study of about 380 skins with skulls and 75 additional skulls from the collection of the Biological Survey."

Discusses history, specimens, habits, economic status, food, and pelages of American harvest mice. Lists locations and provides a key to species and subspecies, and provides species descriptions.

From letter of transmittal: "The work consists of a systematic study of all the members of the genus, and includes keys for the identification of the various forms, together with the necessary illustrations, and maps showing the geographic distribution of the species."

Describes habits, predators, morphology, sexual variation, pelages, and distribution of pocket gophers. Describes genera and group relations. Describes, lists locations and distribution, and provides a key for species and subspecies.

From introduction: "Revision to include all known hares and rabbits of North America from Isthmus of Panama to north Greenland."

Report issued by the U.S. Bureau of Mines discussing a materials survey conducted on lead. Physicality, history, geology, uses, and locations of lead is presented. This report includes maps, tables, illustrations, and photographs.

The following report discusses results from two years of sampling the flora and fauna in three habitats on the west coast of Whidbey Island. Included is an analysis of species richness, diversity, community structure, seasonal changes and dominant forms.

From Summary: These studies document the temporally episodic and areally site-specific character of subaerial erosion, which is shown to be directly related to prevailing meteorologic conditions.

From Program Overview: "This bulletin summarizes and updates availability information published in individual mineral commodity appraisals since 1979. it also marks achievement, after 15-yr systems and data development history, of a major Bureau goal to build computer-based systems and the necessary staff infrastructure to perform timely, commodity-wide assessments with comparable cost frameworks."

From Summary: This study documents the temporally episodic cliff and bluff erosion occurs; namely, at San Onofre State Park, Camp Joseph Pendleton Marine Reservation, and Torrey Pines City and State Parks.

From introduction: Preliminary assessment between the United States, Mexico, and the IAEA on the technical and economic practicability of a dual-purpose nuclear power plant designed to produce fresh water and electricity for the southern border portion of the Colorado River.

Summary of the raccoons of North and middle America, including history, habits, economic status, pelage and molt, measurements, and subgenera.

From Forward: "The first edition of the record setting forth the history of the boundaries of the United States and the several States and Territories was prepared by Henry Gannett, assisted by Franklin G. Butterfield, and was published as Bulletin 13 of the United States Geological Survey in 1885. The present bulletin is a revision and enlargement of Bulletin 226 and includes additional matter incidentally connected with boundaries."

Introduction: This work is an alphabetical list of the geographic names that are now applied and have been applied to to places and features of the Alaska Landscape.

Brief summary of the habitat, habits, food and economic status, measurements, subfamilies, and subgenera of genera Sorex and Microsorex.

Summary of the geographic distribution, habits and economic relations, and descriptions of the subspecies of the North American Sciuridæ.

Report presenting "the first effort by the National Oceanic and Atmospheric Administration (NOAA), in partnership with other federal, academic and non-governmental partners, to bring together available information on the abundance and distribution of structure-forming corals that occur in U.S. waters at depths greater than 50 m. It consists of an introduction, National Overview and seven regional chapters describing deep coral communities in U.S. waters off Alaska, the U.S. West Coast, Hawai'i and the U.S. Insular Pacific, the Northeastern U.S., Southeastern U.S., Gulf of Mexico, and U.S. Caribbean." (from Preface)

A bibliography of geologic literature published in North America, and such literature on North America wherever published. It contains publications from 1732 to those received prior to the close of 1891.

This report consists of three parts: (1) An annotated list of the generic names of mammals; (2) an alphabetical list of the families of mammals, and (3) a classified list of the generic names, arranged by orders and families.