Identification_Information:  
	Citation:  
		Citation_Information:  
			Originator:  United States Census Bureau - USCB
			Publication_Date:  19901231
			Title:  Public Use Microdata Samples (PUMS)
			Edition:  1.00
			Geospatial_Data_Presentation_Form:  tabular
			Publication_Information:  
				Publication_Place:  Washington, DC
				Publisher:  United States Census Bureau (USCB)
			Online_Linkage:  https://doi.org/10.7927/H41V5BWK
	Description:  
		Abstract:  The Public Use Microdata Samples (PUMS) are computer-accessible files containing records for a sample of housing units, with information on the characteristics of each housing unit and the people in it for 1940-1990. Within the limits of sample size and geographical detail, these files allow users to prepare virtually any tabulations they require. Each datafile is documented in a codebook containing a data dictionary and supporting appendix information. Electronic versions for the codebooks are only available for the 1980 and 1990 datafiles. Identifying information has been removed to protect the confidentiality of the respondents. PUMS is produced by the United States Census Bureau (USCB) and is distributed by USCB, Inter-university Consortium for Political and Social Research (ICPSR), and Columbia University Center for International Earth Science Information Network (CIESIN).
		Purpose:  To provide US housing and related data for demographic analysis; The samples can be extended to analysis of the whole United States for many purposes. Comparative analysis across different groups is possible using the PUMS data.
	Time_Period_of_Content:  
		Time_Period_Information:  
			Range_of_Dates/Times:  
				Beginning_Date:  19400101
				Ending_Date:  19901231
		Currentness_Reference:  publication date
	Status:  
		Progress:  Complete
		Maintenance_and_Update_Frequency:  As needed
	Spatial_Domain:  
		Bounding_Coordinates:  
			West_Bounding_Coordinate:  -180.000000
			East_Bounding_Coordinate:  -66.000000
			North_Bounding_Coordinate:  73.000000
			South_Bounding_Coordinate:  18.000000
	Keywords:  
		Theme:  
			Theme_Keyword_Thesaurus:  Data Granularity
			Theme_Keyword:  Country
			Theme_Keyword:  State
			Theme_Keyword:  County
		Theme:  
			Theme_Keyword_Thesaurus:  SEDAC Theme
			Theme_Keyword:  Population
		Theme:  
			Theme_Keyword_Thesaurus:  ISO Topic
			Theme_Keyword:  Society
		Theme:  
			Theme_Keyword_Thesaurus:  GCMD Science Keywords, Version 8.6
			Theme_Keyword:  EARTH SCIENCE > HUMAN DIMENSIONS > POPULATION
		Place:  
			Place_Keyword_Thesaurus:  CIESIN Location Terms, Version 3.1
			Place_Keyword:  United States of America
	Access_Constraints:  None
	Use_Constraints:  Users are free to use, copy, distribute, transmit, and adapt the work for commercial and non-commercial purposes, without restriction, as long as clear attribution of the source is provided.
	Point_of_Contact:  
		Contact_Information:  
			Contact_Organization_Primary:  
				Contact_Organization:  NASA Socioeconomic Data and Applications Center (SEDAC)
			Contact_Address:  
				Address_Type:  mailing and physical address
				Address:  CIESIN, Columbia University, 61 Route 9W, P.O. Box 1000
				City:  Palisades
				State_or_Province:  New York
				Postal_Code:  10964
				Country:  United States
			Contact_Voice_Telephone:  +1 845-365-8920
			Contact_Facsimile_Telephone:  +1 845-365-8922
			Contact_Electronic_Mail_Address:  ciesin.info@ciesin.columbia.edu
	Browse_Graphic:  
		Browse_Graphic_File_Name:  https://sedac.ciesin.columbia.edu/downloads/maps/acrp/acrp-public-use-microdata-samples/sedac-logo.jpg
		Browse_Graphic_File_Type:  JPEG
	Cross_Reference:  
		Citation_Information:  
			Originator:  Center for International Earth Science Information Network - CIESIN
			Publication_Date:  19961231
			Title:  Archive of Census Related Products (ACRP): 1990 Summary Tape File (STF1B)
			Edition:  1.00
			Geospatial_Data_Presentation_Form:  tabular
			Publication_Information:  
				Publication_Place:  Saginaw, MI
				Publisher:  NASA Socioeconomic Data and Applications Center (SEDAC)
			Online_Linkage:  https://doi.org/10.7927/H4Z60KZ9
	Cross_Reference:  
		Citation_Information:  
			Originator:  Center for International Earth Science Information Network - CIESIN
			Publication_Date:  19961231
			Title:  Archive of Census Related Products (ACRP): 1980 SAS Transport Files
			Edition:  1.00
			Geospatial_Data_Presentation_Form:  tabular
			Publication_Information:  
				Publication_Place:  Saginaw, MI
				Publisher:  NASA Socioeconomic Data and Applications Center (SEDAC)
			Online_Linkage:  https://doi.org/10.7927/H4G44N6R
	Cross_Reference:  
		Citation_Information:  
			Originator:  Center for International Earth Science Information Network - CIESIN
			Publication_Date:  19961231
			Title:  Archive of Census Related Products (ACRP): 1990 SAS Transport Files
			Edition:  1.00
			Geospatial_Data_Presentation_Form:  tabular
			Publication_Information:  
				Publication_Place:  Saginaw, MI
				Publisher:  NASA Socioeconomic Data and Applications Center (SEDAC)
			Online_Linkage:  https://doi.org/10.7927/H4BG2KWB
	Cross_Reference:  
		Citation_Information:  
			Originator:  Center for International Earth Science Information Network - CIESIN
			Publication_Date:  19961231
			Title:  Archive of Census Related Products (ACRP): 1992 Boundary Files
			Edition:  1.00
			Geospatial_Data_Presentation_Form:  vector
			Publication_Information:  
				Publication_Place:  Saginaw, MI
				Publisher:  NASA Socioeconomic Data and Applications Center (SEDAC)
			Online_Linkage:  https://doi.org/10.7927/H47P8W9V
	Cross_Reference:  
		Citation_Information:  
			Originator:  Center for International Earth Science Information Network - CIESIN
			Publication_Date:  19961231
			Title:  Archive of Census Related Products (ACRP): 1990 Census Block Statistics
			Edition:  1.00
			Geospatial_Data_Presentation_Form:  tabular
			Publication_Information:  
				Publication_Place:  Saginaw, MI
				Publisher:  NASA Socioeconomic Data and Applications Center (SEDAC)
			Online_Linkage:  https://doi.org/10.7927/H43X84KH
	Cross_Reference:  
		Citation_Information:  
			Originator:  Center for International Earth Science Information Network - CIESIN
			Publication_Date:  19961231
			Title:  Archive of Census Related Products (ACRP): 1990 Enhanced Migration Files
			Edition:  1.00
			Geospatial_Data_Presentation_Form:  tabular
			Publication_Information:  
				Publication_Place:  Saginaw, MI
				Publisher:  NASA Socioeconomic Data and Applications Center (SEDAC)
			Online_Linkage:  https://doi.org/10.7927/H4057CV3
	Cross_Reference:  
		Citation_Information:  
			Originator:  Center for International Earth Science Information Network - CIESIN
			Publication_Date:  19961231
			Title:  Archive of Census Related Products (ACRP): 1990 Public Use Microdata Sample Areas (PUMA) Boundary Files
			Edition:  1.00
			Geospatial_Data_Presentation_Form:  vector
			Publication_Information:  
				Publication_Place:  Saginaw, MI
				Publisher:  NASA Socioeconomic Data and Applications Center (SEDAC)
			Online_Linkage:  https://doi.org/10.7927/H4QN64NG
	Cross_Reference:  
		Citation_Information:  
			Originator:  Center for International Earth Science Information Network - CIESIN
			Publication_Date:  19961231
			Title:  Archive of Census Related Products (ACRP): 1990 Standard Extract Files
			Edition:  1.00
			Geospatial_Data_Presentation_Form:  tabular
			Publication_Information:  
				Publication_Place:  Saginaw, MI
				Publisher:  NASA Socioeconomic Data and Applications Center (SEDAC)
			Online_Linkage:  https://doi.org/10.7927/H46Q1V51
	Cross_Reference:  
		Citation_Information:  
			Originator:  Center for International Earth Science Information Network - CIESIN
			Publication_Date:  19961231
			Title:  Archive of Census Related Products (ACRP): 1990 ZIP Equivalency Files
			Edition:  1.00
			Geospatial_Data_Presentation_Form:  tabular
			Publication_Information:  
				Publication_Place:  Saginaw, MI
				Publisher:  NASA Socioeconomic Data and Applications Center (SEDAC)
			Online_Linkage:  https://doi.org/10.7927/H4TD9V7F
	Cross_Reference:  
		Citation_Information:  
			Originator:  Center for International Earth Science Information Network - CIESIN
			Publication_Date:  19961231
			Title:  Archive of Census Related Products (ACRP): 1990 Street Intersections
			Edition:  1.00
			Geospatial_Data_Presentation_Form:  tabular
			Publication_Information:  
				Publication_Place:  Saginaw, MI
				Publisher:  NASA Socioeconomic Data and Applications Center (SEDAC)
			Online_Linkage:  https://doi.org/10.7927/H42Z13FP
Distribution_Information:  
	Distributor:  
		Contact_Information:  
			Contact_Organization_Primary:  
				Contact_Organization:  NASA Socioeconomic Data and Applications Center (SEDAC)
			Contact_Address:  
				Address_Type:  mailing and physical address
				Address:  CIESIN, Columbia University, 61 Route 9W, P.O. Box 1000
				City:  Palisades
				State_or_Province:  New York
				Postal_Code:  10964
				Country:  United States
			Contact_Voice_Telephone:  +1 845-365-8920
			Contact_Facsimile_Telephone:  +1 845-365-8922
			Contact_Electronic_Mail_Address:  ciesin.info@ciesin.columbia.edu
	Resource_Description:  CIESIN_SEDAC_ACRP_PUMS
	Distribution_Liability:  CIESIN follows procedures designed to ensure that data disseminated by CIESIN are of reasonable quality. If, despite these procedures, users encounter apparent errors or misstatements in the data, they should contact SEDAC User Services at +1 845-365-8920 or via email at ciesin.info@ciesin.columbia.edu. Neither CIESIN nor NASA verifies or guarantees the accuracy, reliability, or completeness of any data provided. CIESIN provides this data without warranty of any kind whatsoever, either expressed or implied. CIESIN shall not be liable for incidental, consequential, or special damages arising out of the use of any data provided by CIESIN.
	Standard_Order_Process:  
		Fees:  0
		Ordering_Instructions:  The data in Boundary File Format (.bna) format are available from the NASA Socioeconomic Data and Applications Center (SEDAC).
	Standard_Order_Process:  
		Digital_Form:  
			Digital_Transfer_Information:  
				Format_Name:  BNA
				File_Decompression_Technique:  Unzip
			Digital_Transfer_Option:  
				Online_Option:  
					Computer_Contact_Information:  
						Network_Address:  
							Network_Resource_Name:  https://sedac.ciesin.columbia.edu/data/set/acrp-public-use-microdata-samples/data-download
					Access_Instructions:  Data accessible via the data set landing page.
	Available_Time_Period:  
		Time_Period_Information:  
			Range_of_Dates/Times:  
				Beginning_Date:  20021231
				Ending_Date:  Present
Metadata_Reference_Information:  
	Metadata_Date:  20020910
	Metadata_Review_Date:  20220831
	Metadata_Contact:  
		Contact_Information:  
			Contact_Organization_Primary:  
				Contact_Organization:  Center for International Earth Science Information Network (CIESIN) Metadata Administration
			Contact_Address:  
				Address_Type:  mailing and physical address
				Address:  CIESIN, Columbia University, 61 Route 9W, P.O. Box 1000
				City:  Palisades
				State_or_Province:  New York
				Postal_Code:  10964
				Country:  United States
			Contact_Voice_Telephone:  +1 845-365-8988
			Contact_Facsimile_Telephone:  +1 845-365-8922
			Contact_Electronic_Mail_Address:  metadata@ciesin.columbia.edu
	Metadata_Standard_Name:  FGDC Content Standards for Digital Geospatial Metadata
	Metadata_Standard_Version:  FGDC-STD-001-1998
	Metadata_Time_Convention:  local time