Immanuel Wallerstein, Giovanni Arrighi, Gunder Frank.
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May 2002, Riverside, CA: Political Economy of the World-System Meeting. From left to right: Stephen K. Sankderson, Thomas D. Hall, Christopher Chase-Dunn, Andre Gunder Frank
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1989, Berkeley, CA. International Society for Comparative Studies of Civilizations. From left: Christopher Chase-Dunn, Andre Gunder Frank, Thomas D. Hall, Stephen K. Sanderson
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1998, International Studies Convention: Andre Gunder Frank on the left, Christopher Chase-Dunn on the right.
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1998, International Studies Convention: Andre Gunder Frank on the left, Immanuel Wallestein on the right
