Mapping data in this directory was obtained from the United States Geological Survey (USGS) at http://nationalatlas.gov/atlasftp.html.  
Data and information authored or produced by the USGS are in the public domain:  http://nationalatlas.gov/policies.html.  
The following notices and information are provided by the USGS:
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	Are there legal restrictions on access or use of the data?

		Access_Constraints: None 
		Use_Constraints: 
			None. Acknowledgment of the National Atlas of the United States 
			of America and (or) the U.S. Geological Survey would be 
			appreciated in products derived from these data. 

	1. Who distributes the data set? (Distributor 1 of 1)

		Earth Science Information Center, U.S. Geological Survey
		507 National Center
		Reston, VA 20192

		1-888-ASK-USGS (1-888-275-8747) (voice)


		Contact_Instructions: 
			In addition to the address above there are other ESIC offices throughout the 	
			country. A full list of these offices is at 
			<http://mapping.usgs.gov/esic/esic_index.html>. 

	2. What's the catalog number I need to order this data set?

	3. What legal disclaimers am I supposed to read?

		Although these data have been processed successfully on a computer system 
		at the U.S. Geological Survey, no warranty expressed or implied is made by the U.S. Geological Survey regarding the utility of the data on any other system, nor shall the act of distribution constitute any such warranty. No responsibility is assumed by the U.S. Geological Survey in the use of these data. 

	4. How can I download or order the data?

		Availability in digital form:
			
		Data format: ESRI Shapefile  
		Network links: <http://nationalatlas.gov/atlasftp.html>
 
		Data format: SDTS  
		Network links: <http://nationalatlas.gov/atlasftp.html>
 

		Cost to order the data: 

		There is no charge for the online option. For National Atlas files ordered on CD-ROM 
		there is a base price of $45.00 per disc, a handling fee of $5.00, and a per-file 
		charge based on file size. The charge for files less than 10 megabytes in size is 
		$1.00. The charge for files that range in size from 10 to 150 megabytes is $7.50. The 
		charge for files of 150 megabytes or larger is $15.00. The charge is $7.50 for the 
		Major Roads of the United States data set.


		Special instructions:

			To order files on CD-ROM, please see <http://nationalatlas.gov/atlasftp.html#q12>. 

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This Shapefile data is then reformatted into a simple JSON format