-------------------------------------------------------------------------------- Codebook for NHGIS data file 'nhgis0004_ds7_1840_county' -------------------------------------------------------------------------------- Contents - Data Summary - Data Dictionary - Citation and Use Additional documentation on NHGIS data sources is available at: https://www.nhgis.org/documentation/tabular-data -------------------------------------------------------------------------------- Data Summary -------------------------------------------------------------------------------- Year: 1840 Geographic level: County (by State) Dataset: 1840 Census: Population & Other Data [US, States & Counties] NHGIS code: 1840_cPopX NHGIS ID: ds7 Tables: 1. Colored Population by Slave Status by Sex by Age Universe: Colored Persons Source code: NT5 NHGIS code: ACZ 2. Race/Slave Status Universe: Persons Source code: NT25 NHGIS code: ACS 3. Colored Population by Slave Status by Sex Universe: Colored Persons Source code: NT28 NHGIS code: ACU -------------------------------------------------------------------------------- Data Dictionary -------------------------------------------------------------------------------- Context Fields GISJOIN: GIS Join Match Code YEAR: Data File Year STATE: State Name STATEA: State Code COUNTY: County Name COUNTYA: County Code AREANAME: Area name Table 1: Colored Population by Slave Status by Sex by Age Universe: Colored Persons Source code: NT5 NHGIS code: ACZ ACZ001: Free >> Male >> Under 10 years of age ACZ002: Free >> Male >> 10 to 23 years of age ACZ003: Free >> Male >> 24 to 35 years of age ACZ004: Free >> Male >> 36 to 54 years of age ACZ005: Free >> Male >> 55 to 99 years of age ACZ006: Free >> Male >> 100 years of age and over ACZ007: Free >> Female >> Under 10 years of age ACZ008: Free >> Female >> 10 to 23 years of age ACZ009: Free >> Female >> 24 to 35 years of age ACZ010: Free >> Female >> 36 to 54 years of age ACZ011: Free >> Female >> 55 to 99 years of age ACZ012: Free >> Female >> 100 years of age and over ACZ013: Slave >> Male >> Under 10 years of age ACZ014: Slave >> Male >> 10 to 23 years of age ACZ015: Slave >> Male >> 24 to 35 years of age ACZ016: Slave >> Male >> 36 to 54 years of age ACZ017: Slave >> Male >> 55 to 99 years of age ACZ018: Slave >> Male >> 100 years of age and over ACZ019: Slave >> Female >> Under 10 years of age ACZ020: Slave >> Female >> 10 to 23 years of age ACZ021: Slave >> Female >> 24 to 35 years of age ACZ022: Slave >> Female >> 36 to 54 years of age ACZ023: Slave >> Female >> 55 to 99 years of age ACZ024: Slave >> Female >> 100 years of age and over Table 2: Race/Slave Status Universe: Persons Source code: NT25 NHGIS code: ACS ACS001: White ACS002: Nonwhite: Free ACS003: Nonwhite: Slave Table 3: Colored Population by Slave Status by Sex Universe: Colored Persons Source code: NT28 NHGIS code: ACU ACU001: Free >> Male ACU002: Free >> Female ACU003: Slave >> Male ACU004: Slave >> Female -------------------------------------------------------------------------------- Citation and Use of NHGIS Data -------------------------------------------------------------------------------- All persons are granted a limited license to use this documentation and the accompanying data, subject to the following conditions: * Publications and research reports employing NHGIS data (either tabular or GIS) must cite it appropriately. The citation should include the following: Minnesota Population Center. National Historical Geographic Information System: Version 2.0. Minneapolis, MN: University of Minnesota 2011. * Publications and research reports employing school attendance areas data (either tabular or GIS) must cite it appropriately. The citation should include the following: The College of William and Mary and the Minnesota Population Center. School Attendance Boundary Information System (SABINS): Version 1.0. Minneapolis, MN: University of Minnesota 2011. * If possible, citations should also include the URL for the NHGIS site: https://www.nhgis.org/ * If possible, citations involving school attendance areas should also include the URL for the SABINS site: http://www.sabinsdata.org/ In addition, we request that users send us a copy of any publications, research reports, or educational material making use of the data or documentation. Printed matter should be sent to: NHGIS Minnesota Population Center University of Minnesota 50 Willey Hall 225 19th Ave S Minneapolis, MN 55455 Send electronic material to: nhgis@umn.edu