When Barry Wellman founded the International Network for Social Network Analysis (INSNA) in 1977, he sent a questionnaire to all the founding members. Included were questions on who taught each founder and who each founder taught. This data set is based on their responses.
Source
http://moreno.ss.uci.edu/data#ts
References
K. Reitz and D. R. White, 1989 "Rethinking the Role Concept: Homomorphisms on Social Networks" pp. 429-488 in L.C.Freeman, D.R. White, A.K.Romney, eds., Research Methods in Social Network Analysis. George Mason Press. Reprinted 1992 Transaction Publishers: New Brunswick, NJ.
