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Codebook for NHGIS data file 'nhgis0010_ds5_1830_state'
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Contents
    - Data Summary
    - Data Dictionary
    - Citation and Use
 
Additional documentation on NHGIS data sources is available at: 
    https://www.nhgis.org/documentation/tabular-data 
 
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Data Summary
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Year:             1830
Geographic level: State
Dataset:          1830 Census: Population Data [US, States & Counties]
   NHGIS code:    1830_cPop
   NHGIS ID:      ds5
 
Tables:
 
1. Race/Slave Status by Sex
   Universe:    Persons
   Source code: NT12
   NHGIS code:  ABO
 
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Data Dictionary
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Context Fields 
    GISJOIN:     GIS Join Match Code
    YEAR:        Data File Year
    STATE:       State Name
    STATEA:      State Code
    COUNTYA:     County Code
    AREANAME:    Area name
 
Table 1:     Race/Slave Status by Sex
Universe:    Persons
Source code: NT12
NHGIS code:  ABO
    ABO001:      White >> Male
    ABO002:      White >> Female
    ABO003:      Nonwhite: Slave >> Male
    ABO004:      Nonwhite: Slave >> Female
    ABO005:      Nonwhite: Free >> Male
    ABO006:      Nonwhite: Free >> Female
 
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Citation and Use of NHGIS Data
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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:

    Steven Manson, Jonathan Schroeder, David Van Riper, and Steven Ruggles. 
    IPUMS National Historical Geographic Information System: Version 12.0 [Database]. 
    Minneapolis: University of Minnesota. 2017. 
    http://doi.org/10.18128/D050.V12.0

* 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.

* For policy briefs or articles in the popular press, we recommend that you cite the use of NHGIS data as follows:

    IPUMS NHGIS, University of Minnesota, 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
