Defense highway act of 1941. Hearing before the Committee on Post Offices and Post Roads, United States Senate, Seventy-seventh Congress, first session, on S. 1580, a bill to supplement the Federal aid road act, approved July 11, 1916, as amended and supplemented, to authorize appropriations during the National emergency declared by the President on May 27, 1941, for the immediate construction of roads urgently needed for the National defense, and for other purposes, June 4, 1941 ...

Kenneth McKellar, chairman.

Post office appropriation bill, 1917. Railway mail pay Hearings before the Committee on post offices and post roads, United States Senate, Sixty-fourth Congress, first session, on H. R. 10484, an act making appropriations for the service of the Post office department for the fiscal year ending June 30, 1917, and for other purposes. April 14, 15, 17, 18, & 19, 1916 ...

John H. Bankhead, chairman.

Administration of air-mail routes and contracts : Hearing before the Committee on Post Offices and Post Roads, United States Senate, seventy-third Congress, second session on S.J. Res. 134. Administration of air-mail routes and contracts.

Mode of access: Internet.

A map of the United States of North America /

Shows many roads, has "Tennassee" on sheet 3, as well as the 22 line boundaries note.

A Map of the United States of N. America.

Photostat from: Bailey's pocket Almanac for 1785.

Military map of the United States of America : showing location of all forces in training /

Relief shown by hachures.

The traveller's directory through the United States : containing a description of all the principal roads through the United States, with copious remarks on the rivers, and other objects : to which is added, an appendix, containing, post-office regulations, land-offices, military posts, census of the United States, and a comparative and prospective view of the population /

Goldsmiths'-Kress no. 23596.

Memoir on the recent surveys, observations, and internal improvements, in the United States, with brief notices of the new counties, towns, villages, canals, and rail roads, never before delineated. By H. S. Tanner. Intended to accompany his new map of the United States.

Eight pages at end contain: "A list of maps, charts, and geographical works, recently published, and for sale by H. S. Tanner ... Philadelphia."

Map of the United States and territories showing the extent of public surveys and military reservations, land grant R.R., rail roads, canals, and other details ...

Kartta kuuluu A. E. Nordenskiöldin kokoelmaan

Dengue transmission risk maps of the continental United States

Dengue fever is a strictly human and non-human primate disease characterized by a high fever, thrombocytopenia, retro-orbital pain, and severe joint and muscle pain. Over 40% of the world population is at risk. Recent re-emergence of dengue outbreaks in Texas and Florida following the re-introduction of competent Aedes mosquito vectors in the United States have raised growing concerns about the potential for increased occurrences of dengue fever outbreaks throughout the southern United States. Current deficiencies in vector control, active surveillance and awareness among medical practitioners may contribute to a delay in recognizing and controlling a dengue virus outbreak. Previous studies have shown links between low-income census tracts, high population density, and dengue fever within the United States. Areas of low-income and high population density that correlate with the distribution of Aedes mosquitoes result in higher potential for outbreaks. In this retrospective ecologic study, nine maps were generated to model U.S. census tracts’ potential to sustain dengue virus transmission if the virus was introduced into the area. Variables in the model included presence of a competent vector in the county and census tract percent poverty and population density. Thirty states, 1,188 counties, and 34,705 census tracts were included in the analysis. Among counties with Aedes mosquito infestation, the census tracts were ranked high, medium, and low risk potential for sustained transmission of the virus. High risk census tracts were identified as areas having the vector, ≥20% poverty, and ≥500 persons per square mile. Census tracts with either ≥20% poverty or ≥500 persons per square mile and have the vector present are considered moderate risk. Census tracts that have the vector present but have <20% poverty and <500 persons per square mile are considered low risk. Furthermore, counties were characterized as moderate risk if 50% or more of the census tracts in that county were rated high or moderate risk, and high risk if 25% or greater were rated high risk. Extreme risk counties, which were primarily concentrated in Texas and Mississippi, were considered having 50% or greater of the census tracts ranked as high risk. Mapping of geographic areas with potential to sustain dengue virus transmission will support surveillance efforts and assist medical personnel in recognizing potential cases. ^

Northeastern United States, 1799 : showing township grants and land purchases in New York (Raster Image)

This layer is a georeferenced raster image of the historic paper map entitled: Map of the middle states of North America : shewing the position of the Geneseo country comprehending the counties of Ontario & Steuben as laid off in townships of six miles squar[e] each, Maverick, sculpt. It was printed by T. & J. Swords for Charles Williamson's Description of the settlement of the Genesee country, in the state of New-York, 1799. Scale [ca. 1:2,250,000]. Partial cadastral map showing large land purchases and township grants in New York State. Covers New York, Pennsylvania, Vermont, Massachusetts, Connecticut, New Jersey, Washington, D.C. and portions of Maryland, Delaware, and West Virginia. The image inside the map neatline is georeferenced to the surface of the earth and fit to the Universal Transverse Mercator (UTM) Zone 18N NAD83 projection. All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map. This map shows features such as roads, drainage, major cities and towns, land purchases, township grants, state boundaries, and more. Includes key to "principal villages in Ontario & Steuben counties." This layer is part of a selection of digitally scanned and georeferenced historic maps from The Harvard Map Collection as part of the Imaging the Urban Environment project. Maps selected for this project represent major urban areas and cities of the world, at various time periods. These maps typically portray both natural and manmade features at a large scale. The selection represents a range of regions, originators, ground condition dates, scales, and purposes.

Toll facilities in the United States: bridges, roads, tunnels, ferries.

Mode of access: Internet.

Reliability of toll road revenue forecasts for selected toll roads in the United States.

Texas Department of Transportation, Austin

Official map publications; a historical sketch, and a bibliographical handbook of current maps and mapping services in the United States, Canada, Latin America, France, Great Britain, Germany, and certain other countries,

"Classification, cataloging, and care of maps": p. 282-295; "Tentative map classification outline by subject": p. 297-308; "Map classification outline by areas": p. 309-311.