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Intergovernmental Organization Data, 1816-1964 (ICPSR 5520)

Principal Investigator(s):


This data collection describes the membership status of 148 nations in 237 inter-governmental organizations (IGO) that were extant in the 30 five-year periods from 1815-1967. Each nation is coded at five-year intervals for membership types, such as full or associate membership in the particular IGO, and membership or nonmembership in the international system.

Series: Correlates of War Project Series

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Study Description


Wallace, Michael, and J. David Singer. INTERGOVERNMENTAL ORGANIZATION DATA, 1816-1964. ICPSR05520-v1. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 1998. http://doi.org/10.3886/ICPSR05520.v1

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Scope of Study

Subject Terms:   intergovernmental organizations, international affairs, international agreements, international cooperation, international organizations, memberships, organizations

Geographic Coverage:   Global

Time Period:  

  • 1816--1964

Universe:   A total of 148 nations in 237 inter-governmental organizations that were extant in the period 1815-1967.

Data Types:   aggregate data, and administrative records data



Original ICPSR Release:  

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