source
The Korean Family Planning data were
stored on a Vax tape that Rogers had given to Marc Granovetter who then gave
it to his colleague Roland Soong (see Granovetter & Soong, 1983). Granovetter
instructed Song to send the tape to me and I had it loaded on the Vax machine
at USC in 1990 and was able to download the data to a PC. The first two datasets
were acquired for my dissertation (Valente, 1991) and the third added as I
completed my book on Network Models of the Diffusion of Innovations (Valente,
1995; also see Valente, 2005).